Distance, Displacement, Speed and Velocity 

For LIVE Classes, Concept Videos, Quizzes, Mock Tests & Revision Notes please see our Website/App 👉Our Website: bit.ly/2KBC0l1 👉Android App: bit.ly/3k48zdK

1.when the body moves in a straight line 2.speed; velocity rate of change of distance rate of chancge of displacement scaler quantity vector quantity 3.complete one round=60 seconds & diameter=14m radius=diameter/2 radius=14/2=7m distance= 2*pi*r =2*3.14*7 =43.9 SPEED; =distance/time =43.9/60 =0.73 m/s velocity; =displacement/time =0/60 =0 m/s Hope it helps!!

When I saw the thumbnail I thought it was Akshay Kumar 😅

Wow even Byjus can't teach concepts this easy. Manocha Academy is great.

1. When the journey is in a straight line. 2. Speed is scalar and velocity is vector. Speed=Distance/Time, Vector=Displacement/Time 3.Circumference=44m, Time=60 secs Avg. Speed=11/15 m/s Avg. Velocity=0 m/s

My answers: Q1: Distance is equal to displacement when the objective is back on it's starting point. Q2: Speed is the distance divided by time and using scale and velocity is using displacement divided by time and using vector. Q3: The boy has an average speed of 4.2 m/ps, and his average velocity is 4.2m/ps. PS. I had this shown in my class last week, and eventually I decided to subscribe. Good job, man! 👍

1-when both are in a straight line 2-speed=distance/time, scalar. & velocity=displacement/time , it is a vector quantity 3-total distance/total time =πd/t =(22/7*14)/60 =0.73 m/s Total displacement/total time =0/60 =0m/s

Ans 1- In uniform motion (moving in straight line. Ans2-i) speed depends on distance Where velocity depends on both distance and direction ii) speed =scalar, velocity=vector Ans3- Avg. Velocity =0m/s Avg. Speed =total time /total distance. Total distance=circumference of circle, D=C=2πr, =2x22÷7x7=44m Avg. Speed =44÷60=0.73m/s.

Q1. When a body is moving in straight line then the distance is equal to displacement . Let's suppose ....... A body travels from point A to B in a straight line and the distance between A to B is 40m then the displacement will also be 40 m because. The shortest distance between Initial position and final position is AB itself. A ._____________________________.B Q2. Speed:--- 1.speed is a sclar quantity. 2. Speed= distance/ time 😁 Velocity:--- 1. Velocity is a vector quantity 2. Velocity= displacement/time 😁 Q 3. Given;-- diameter of circle= 14m Therefore; radius will be 7m Now the circumference of circle is 44m . Average speed= total distance/ total time =→ 44m/1minute __. 44/60= 0.733m/s Now, average velocity= total displacement/total time Total displacement is 0m because his initial position and final position both are same . Now average velocity= 0m/1minute 0m/60sec = 0m/s Therefore . Average speed= 0.733m Average velocity= 0m/s 🤗🤗🤗🤗🤗🤗😘😘😘🥰🥰🥰🥰. If my ans is correct then plz sir ☺️ pin my comment.....

it's been two years since this video was uploaded and you're still replying to comments and helping us out. This shows how dedicated you are to teach people. Thank you sir!

1)when distance of an object in straight line. There distance=displacement. 2)SPEED: speed has no specific direction. speed is scalar quantity. VELOCITY: velocity has specific direction. velocity is vector quantity. 3) average speed of the boy=0.73 here,the boy is coming to his initial position. So the displacement of the boy is 0. We know if displacement is zero velocity is also zero. Thank you sir ❤️❤️

Ans.1 when the body is at rest and displacement is 0 2.speed is scalar and velocity is vector the difference b/w their definitions 3.diameter÷2=7m(radius) Avg.speed =distance÷time =0.73m/s Avg.velocity=0m/s Thanku so much sir it is really helpful

1. when they are in stright line from initial point to final point 2.speed is scalar and distance/time velocity is vector and displacment/time 3. avg speed = 0.73m/s avg velocity = 0

Ty sir awesome video. I would like to watch more videos of u. Ans 1 = distance and displacement is equal when u are travelling in same direction not changing your path like from 1 town to another which has its route in one and straight direction. Ans 2 = *_SPEED_* 1. Speed is a scalar quantity 2. Speed has no direction *_VELOCITY_* 1. Is a vector quantity 2. We need to write a fixed direction in velocity. ANS 3 = speed is 88 m/s Velocity is 0 m/s because of 0 displacement. Once again ty sir

ans 1 = distance is equal to displacement only when object is travelling in a straight line with constant motion . ans 2 =speed is distance per unit time velocity is displacement per unit time speed is a scalar quantity velocity is a vector quantity ans 3 = total distance covered = πd = 22/7 *14 = 44 m total time taken = 1 min = 60 sec total speed = total distance / total time taken = 44 / 60 = 0.73 m/sec total displacement = 0 m/sec total time = 60 sec total velocity = total displacement / total time covered = 0/60 = 0 m/sec

Q3. (i)Answer is O.73333 m/s D is given = 14m Radius=d/2 R=14/2=7 R=7 Circumference= total distance of path 2πr=2×22/7×7,2×22= 44 S= d/t,44/60 = 0.7333 m/s (ii)velocity = displacement/time Initial and final position is same so velocity will be = 0

My opinion:- Ans 2) Speed don't have a direction. It is distance upon time. Velocity have a direction. It is displacement upon time Ans3) R=7m Formula = 2πr 2×22/7×7 = 44m Hence average speed is 44m divide by 60sec is 7.333....m/s whereas average velocity is 0 m/s ( as he is moving in a circular path)

Searched too many videos but finally got the one most understanding and amazing video . Just like the fruit of hardwork is sweet .

I am in 8th standard and i really enjoyed the video..the content is ausome.. thanku so much!👏👏👌👌👌👍👍

Q1- when a body travels in a straight line Q2- speed is a scaler quenty and velocity is vector quenty

I'm working through physics currently, and these videos are very helpful. Helping me understand concepts better. Keep them coming!

Q1 Ans. When path lenth is in straight line. Q2 Ans. First difference is speed is scalar quantity and velocity is a vector quantity. Second diffrance is speed always be positive quality and velocity could be in positive negative and zero quantity. Q3. Ans. Average speed is 0.76 m/s Average velocity is 0 m/s. Lot of thank you so much sir.... For understanding this concept with wonderful question....... Thanks

Answer:1 distance is having magnitude and displacement is having both magnitude and distance and would be same when they are traveling in the same linear path. Answer 2: Speed = Distance/Time and but it has no direction whereas Velocity= Displacement/Time and it's having a direction. Answer 3: average speed= 44/60=11/15 m/s and average velocity= 0/60 = 0m/s.

1) when the body motion in straight line 2)speed=scalar, distance/T Velocity=vector, displacement/T 3)2¶R=2×22/7×7=44, AVG SPD=44/60 m/s AVG VELOCITY =ZERO final POINT and intitial point same

Q1) When the body is in a straight line Q2) Speed is equal to distance ÷ time while velocity is equal to displacement ÷ time and speed is a scalar quantity while velocity is a vector quantity. Q3) average speed=0.733 m/s and average velocity=0

You are teaching every topic very easy which we can understand fast.

Q1:alone a straight line Q2:speed is a scalar quantity and velocity is a vector quantity. Speed consists only of magnitude but velocity consists of both magnitude and direction. Q3:the average speed is 0.2m/s and the average velocity is 0m/s.

(3) Total distance = Circumference of the circle = π×d = (22/7)×14 = 44 m. Total time = 1 min = 60 seconds. Average speed = 44/60 = (11/15) m/s. Now, total displacement = 0 (the boy returns to initial point) Average velocity = 0/60 = 0 m/s.

Q1. Distance and displacement can only be the same in the object is moving in uniform motion Q2. Speed is distance / time and velocity is displacement / time and speed is a scalar quantity and velocity is a vector quantity. Q3. 14 X 3.14 = 43.96 43.96 / 60 = 0.73266667 average speed. 0 / 60 = 0 average velocity.

Best vedio on RU-vid on these topics. I think the answers should be:- 1) Distance is equal to displacement when we take the shortest path to travell from one place another. 2) •Speed is the rate of change of distance whereas velocity is the rate of change of displacement. •Speed is a scalar quantity whereas velocity is a vector quantity. 3. Average speed = 0.733m/s and Average velocity = 0

Q 1)when a body is travelling in a straight line Q 2) speed is scalar and it is rate of change of distance. While velocity is vector and it is rate of change of displacement. Q 3) Average speed 14/60= 0.23 And Average velocity 0/60=0 displacemet is 0 coz the boy is travelling in a circle

Sir , u really are fantastic, really .

I'm preparing for NEET but I was confused between speed and velocity, now I understood. Thank you sir!

1. When there is only one path available to reach the end point the distance and displacement is same because that is the shortest path. 2. Speed is the rate of change of speed. It is a scalar quantity. Velocity is the rate of change of displacement. It is a vector quantity. 3. Average speed = 44m/60 s = 0.733 m/s Average velocity = 0m/60s = 0m/s

We need teachers like him....He is superb at explaining things with ease..... "PRACTICAL KNOWLEDGE"

1no.........👌👌👌👌👌👌👌👌👌👌

Qno1= distance can be equal to displacement if the body travel in a straight path. Qno2= speed. | velocity = speed is scalar quantity. | velocity is a vector quantity. =Speed cannot be negative | velocity can be negative = speed cannot be zero | velocity can be zero Qno3= 0.777777777777777 or 0.8 m/s. All are correct. Thanks a lot❤

Question no. 1 answer) it's travelling in a straight line. 2) Speed It's scalar quantity Rate of change of distance Velocity Its vector quantity Rate of change of displacement 3) average speed= 44/60m per second Average velocity= 0 please answer I'm correct or not

1) only when moving in a straight line. 2. a) speed is the rate of change of distance while velocity is rate of change of displacement. 2. b) speed has only magnitude while velocity has both magnitude and direction 3) Average speed = 44 ÷ 60seconds 0,73/sec Average Velocity = 0

Q1 - When both objects are travelling in a straight line. Q2- Speed is distance and no direction (Scalar) Velocity is displacement and has direction (Vector) Q3 - Distance = about 42 m so speed = 42 m/60 s = (about) 0.7 m/s average velocity = 0m/s

This "practical" way of teaching is amazing 👏.

I am surprised on how you still replying comments onto these days. It show the dedication you had toward teaching. Thank you , you are a wonderful person.

Sir I think u should make a app of your academy.. Your videos are very helpful to my daughter....Thank u so much👍👍👌

Answer for question 1 is when the object moves in straight line question 2 answer is speed is scalar and velocity is vector and speed is the rate of distance travelled and velocity is the rate of displacement question 3 answer is 14 m is diameter distance is 2×22/7*7=44 m distance time is 60s S= 44/60=0.73 bar displacement is zero .that's it my name is jindam keerthana

1.Distance is equals to displacement when it travels in @ straight path and can't return. 2.Speed is a scalar quantity. Speed doesn't have fixed direction .. Velocity is a vector quantity. Velocity has both magnitude and direction. 3.Average Speed=1.46 m/s Average Velocity=0m/s

1. Distance is equal to displacement when a body travels along a straight line path. 2. Speed is a scalar quantity whereas velocity is a vector quantity. Speed just needs its magnitude to have a complete meaning while velocity needs both magnitude and direction to have a complete meaning. 3. Average speed= 0.73 m/s Average velocity= 0 Thanks for the video sir, I had a fun revision.

Sir I hadn't understand these in my high school life. Now I learn from you. Thank you so much for making this video.

1)Distance is equal to displacement (magnitude) when there is a uniform straight motion 2)Speed is a scalar quantity and to calculate it we use the distance while velocity is a vector quantity and to calculate it we use the displacement 3)You should calculate the perimeter of the circle (2πr) and the result is 43.96. Then you have to calculate the speed (distance/time-->43.96m/60s = 0.73). Finally you have to calculate the velocity (displacement/time-->0m/60s = 0). In the last case the displacement is 0m because the boy returned to the initial point.

What a Good teacher this is all becomes easy for me... splendid, I follow all your teachings and iam writing exams end of this year from zimbabwe

1ans = when a body moves in straight line and in particular direction 2 ans = speed is a scalar and velocity is a vector quantity velocity has magnitude and direction , speed has only magnitude 3ans= average speed = 11/15m/s or 0.73m/s average velocity = 0m/s

(Answer of Q1) Distance is equal to displacement when a body travels from the initial position to the final position in a straight line . (Answer of Q2) Speed is a scalar quantity, but velocity is a vector quantity.speed cannot be zero but velocity can be zero. (Answer of Q3) Average speed=total distance/ total time The distance traveled by the boy is the circumference of the circle. circumference=2 X pi X r r=diameter/2 =(2 X 22/7 X 7)m =14m/2 =44m =7m time=1minute =60second So, average speed=44m/60s =0.73m/s Average velocity=total displacement/total time The displacement is 0m (because the initial position and the final position are the same). Hence, average velocity=0m/60s =0m/s

Q 1: If a body travels in a straight line path ( rectilinear motion) then distance is equal to displacement. Q 2:1) Speed is a scalar quantity while velocity is a vector quantity. 2) Rate of change in distance is called speed while rate of change in displacement is called velocity. 3) SPEED=DISTANCE/TIME whereas VELOCITY=DISPLACEMENT/TIME 4) Speed cannot be zero whereas velocity can be zero. Q 3: GIVEN, length (diameter)= 14 m perimeter of the circular track=2πr = 14 cm * 22/7 = 44 cm time taken to cover the distance = 1 minute = 60 seconds therefore, average speed = 44 cm/60 sec = 11/15 cm per sec since his initial and final positions are at the same spot, the VELOCITY IS ZERO. DEAR SIR, IF THERE ARE ANY MISTAKES, PLEASE RECTIFY AND COMMENT.

You gave me 100% on my chapter test. Thank you very much! :) I really appreciate it!

1. When object moves on a straight line. 2. Speed is a scalar quantity which only shows magnitude and velocity is a vector quantity which shows both magnitude and direction. 3. distance = π × d (circumference) = π × 14 time = 1min = 60s speed = distance/time = π × 14 / 60 = 0.73 m/s displacement = 0 (complete the circle so) time = 1 min = 60s velocity = displacement/time = 0/60 = 0 m/s I have physic exam tmr😍

Q1}when object is uniform Q2}speed-only magnitude&Non-uniform motion Velocity-magnitude and direction both&uniform motion. 3Q}perimeter of circle=2πr r=d÷2 =2×3.14×7 =44m(apx) Avg Speed=d/s =44/60 =0.73m/s Avg Velocity=final-initial ÷time = 0/60 =0

Q.1] Distance is equal to displacement when the object is travelling in a straight path. Q.2] Speed : Rate of change of distance, Scalar quantity Velocity : Rate of change of displacement, Vector quantity Q.3] Avg speed : total distance/total time πd / 60 sec = 22/7 × 14 / 60 = 44/60 = 22/30 m/s Avg velocity : total displacement/total time 0/60 = 0 m/s I hope my answers are correct..✌🏻🤞🏻

Someone have commented how sir find the hypotenuse when the measure of 1st angle =30 m and 2nd = 40. I want to answer him/her, i unable to find her/his comment so i am answering here Base = 30 m Height = 40 m Hypotenuse = ? => By Pythogras therom, => Hypotenuse = √ (30^ 2 + 40^ 2) => Hypotenuse = √ (900 + 1600) => Hypotenuse = √ 2500 = 50 m

It is good video to learn about physics

Q1. When path is straight Q2. Speed- speed is scalar quantity & distance/time Velocity- velocity is vector quantity & displacement/ time Avg. Speed - 0.73 m/s Avg. Velocity - 0 m/s

I did not understand a single word from my teacher.Now I understand everything from here. Thanks

1. When a body travel in a straight line. 2. Speed is scalar quantity . Velocity is a vector quantity. Speed is the rate of change of distance . Velocity is the rate of change of displacement . 3. We need to find the circumference c = 2pi r . To find r we need to divide 14 by 2.

Yes sir this is very using in lockdown sir thanks

Very nice explanation and enjoying practically examples☺☺

Diameter of the circle track = 14 m Radius of the circle track (r) = 14 m / 2 = 7 m Time taken to complete one circle = 1 minute = 60 seconds Total distance covered: The boy runs around the entire circle, so the distance covered in one lap is equal to the circumference of the circle.Circumference (C) = 2πr 𝐶 = 2 × 𝜋 × 7 = 14 𝜋 C=2×π×7=14π meters Average speed: Average speed is the total distance covered divided by the total time taken.Average speed = Total distance / Total timeAverage speed = 14 𝜋 60 60 14π ​ m/sLet's calculate the numerical value:Average speed ≈ 14 × 3.14 60 60 14×3.14 ​ m/s ≈ 43.96 60 60 43.96 ​ m/s ≈ 0.7327 m/s (approximately) Displacement: Displacement is the straight-line distance between the initial and final positions.In this case, the boy returns to the starting point, so his displacement is zero. Average velocity: Average velocity is the displacement divided by the total time taken.Average velocity = Displacement / Total timeAverage velocity = 0 60 60 0 ​ m/sSince the displacement is zero, the average velocity is also zero. So, the average speed of the boy is approximately 0.7327 m/s, and his average velocity is 0 m/s

1) distance : length of the path travelled Displacement: distance between initial point to final point 2) speed : scalar quantity, no direction Velocity: vector quantity, has direction 3) average speed: 44/1 = 44 average velocity: 0

This helps so much in physics study's while lockdown

The way you taught us is mind blowing... Thank you!!

1.When initial velocity and final velocity is same 2. 1, speed is rate of change of distance 2, speed is scalar quantity 1, velocity is rate of change of displacement 2,velocity is vector quantity

Q1. Distance and displacement are equal if the path taken is a straight line. Q2. Speed is a scalar and it is distance/time. While velocity is a vector and it is displacement/time. Q3. The average speed is 0.73m/s while the average velocity is zero(0)

Ans3= distance traveled by the boy = circumference of circle = 2×3.14×7 = 14× 3.14 = 44 Speed = distance/time = 44/60 = 0.73 m/s Displacement = initial point - final point = 0 Velocity = displacement/ time 0/60 = 0 m/s

We understood very well Thank you so much sir

1. In straight path or road 2.[a]speed is scalar quantity and velocity is vector quantity [b] it is defined as the distance and velocity is defined as displacement 3. Average speed of boy is 44 and average velocity is 0

If you die in the same hospital in which you were born then the displacement of your whole life is 0.

1 The distance is equal to velocity when the motion is in the straight line 2speed:scalar quantity velocity :vector quantity speed is distance moved per unit time velocity is rate of change of displacement radius =14/2=7 circumference 44/60=0.73 velocity =0

Q1: when an object travels in a straight line Q2: i speed is scalar and velocity is vector ii speed has only magnitude but has both magnitude as well as direction Q3: avg speed 0.47 and avg velocity 0.23

Q 1. When a body is travelling in a straight line. Q 2. Speed is scale quantity and velocity is a vector quantity Speed is the rate of change in distance & Velocity is the rate of change of displacement. Q 3. Diameter = 14 m so radius will be 7 m as. Radius is half of the diameter So the perimeter of park will be 43.96m or 44m by rounding off and His time is 1 minute or 60 seconds therefore the speed will be 44/60 = 0.73 metres per second.

Sir , please do lectures for class 11. You are one of the great teacher who inspires students to love the subjects and also we understand your teaching , you explains every concept crystal clear . It's a humble request.

Q1-In a Straight line motion Q2-Speed is Scalar but Velocity is a Vector and Speed can be negative but Velocity cannot be negative Q3-Average Speed is 0.733m/s and Average Velocity is 0m/s

Ans-1 when the object is going to in straight line then distence & displacement will be equal... Ans-2 speed-(1)scaler (2)no need to direction Velocity-(1) vector(2)need to direction Ans-3 44/60=22/30=0.73 Sir i'm from hindi medium so please make a video in hindi & english sothat we can also watch your videos ..whose pepople are from hindi medium....

Answers of the Top three questions :- 1. Distance is equal to displacement only when the body is moving in a straight line. 2. Two differences between speed and velocity are as follows :- SPEED || VELOCITY ---------------------------------------------------------------- i. Speed is the rate || i. Velocity is the rate of change of || of change of distance. || displacement. ii. Speed is a || ii. Velocity is a scaler quantity. || vector quantity. 3. Given, Diameter of the circular track = 14 m Radius of the track = (14/2) m = 7 m Therefore, circumference of the circular track = (2*π*7) m = (2*22/7*7) m = (2*22) m = 44 m Therefore, distance covered by the boy = 44 m Displacement covered by the boy = 0 m [ Since, the boy returns back to his initial position ] We know , 1 minute = 60 seconds. Therefore, Average speed of the boy Total distance traveled = ---------------------------------------------- Total time taken 44 = ------------------ m/s 60 = 0.73 m/s [ approx. ] Now, Average velocity of the boy Total displacement covered = -------------------------------------------------------- Total time taken 0 = ---------------------- m/s 60 = 0 m/s. Thank you. I hope I am able to give all correct answers.

1-> when both are zero . 2-> i] Speed is a scalar quantity and velocity is a vector quantity. ii] Speed is rate in change in distance but velocity is rate in change in displacement.

sir just love the way you are explaining...

This man is saving our tution fees 😂❤️❤️❤️ Keep it up sir Love from us(Students)👍👍👍👍👍

A1) When the object is moving distance in straight line. A2) Velocity is a vector quantity, it has both magnitude and direction where as speed is a scalar quantity it has only magnitude. A3) Average speed = 43.96 m/minute Average velocity = 0 m/minute

Q1. If a distance is having direction than it is equal to displacement. Q2. Speed: - •It has no direction only magnitude. •It is scalar quantity. Velocity: •It has both direction and magnitude. •It is vector quantity. Q3. Given: Time=60s diameter=14 (r=14/2=7) Distance? Displacement? :- To find the total distance =circumference ofcircular track Circumference=2πTr (2×22/7×7)= 44 m Total Distance= 44m Total Displacement=0 Avg. speed=44m/60s =0.7m/s Avg.velocity=0m/60s =0m/s Thank you

Circumference of circle =2πr 2×22/7×7 (radius=14/2=7) =44m So, average speed= Total distance/total time =44/60 =0.73m/s Now, average velocity= displacement/time taken =0/60=0m/s

Answer 1- Distance is equal to displacement when the object is in a straight line from initial position to final position. Answer 2-speed - a- scaler b- S.I. unit is m per second - velocity-a- vector -b- S.I. unit is m per second Answer 3 - average speed is 2×22/7×7=44 Then divide 44/60 =0.73 Average velocity=0/60=0 because the object comes start from initial position then come to its initial position that why we say that displacement is 0.....

Answers of these question are following - (1) when we travel in a straight line . (2) (A) speed - (a) scalar ( b) non negative. (B) Velocity (a) vector (b) can be negative. (3) average speed is - 0.23 m/s and average velocity is - 0 m/s Thank you very much for this type of teaching.

1) when a body moves in a straight line 2) speed - scalar Velocity - vector 3) Average speed - 0.733 m/s Average velocity - 0

Good Morning Sir. Myself Siddhi Ashtankar. I am studying in class 9th. I try to give the answer of these questions. Q.1) When distance is equal to displacement? = Distance is equal to displacement when an object travels in a straight line. Q.2) Give two differences between speed and velocity. = Speed Speed is a scalar quantity. Speed = (distance/time). Speed is the value of rate of change of distance. = Velocity Velocity is a vector quantity. Velocity= ( displacement / time). Velocity is the value of rate of change of displacement. Q.3)A boy is jogging around a circular track of diameter 14m.He takes 1 minute to complete the circle.Find the average speed and average velocity of the boy. = Average speed = ( total distance / total time) =[(22/7)×d /60] / 60s =(11×2 / 30)m/s = (22/30)m/s = Average velocity =( total displacement / total time) = (0m/60s) = (0m/s) I hope my all answer are correct🤞🤞🤞...

(Q1-ANS) When the motion of a body is on a straight line with a specified direction. (Q2-ANS) (i) Speed is the rate of change of distance while Velocity is the rate of change of displacement. (ii) Speed is a scalar quantity while Velocity is a vector quantity. (Q3-ANS) Average speed =0.2m/s Average velocity = 0m/s.

Easy way of explaining❤

Very fluent and student friendly language you use. Thanx alot my confusion has been solved by you!!!!

The greatest joke on Newton I have heard - A cow was walking, Newton stopped it. It stopped.......... He found his first law of motion. "AN OBJECT CONTINUES TO MOVE UNTIL IT'S STOPPED" He gave a FORCE by kicking the cow, It gave a sound 'ma....' He formulated the second law "FORCE, F = ma" Cow kicked him back and there comes the third law. If you liked my comment and hit the like button, and don't forget to comment and share your experience.

Ans.1 when an object come back to his initial position or when distance is zero. Ans.2 speed is change in distance nd It is a scaler quantity whereas Velocity is change in displacement nd It is on vector quantity Ans.3 Average speed -:0.73m Average velocity-:0

Answer 1 If motion is along a fixed direction, the magnitude of displacement is equal to that of distance Answer 2 Speed - 1) It is the rate of change of distance 2) It is a scalar quantity Velocity - 1) it is the rate of change of displacement. 2) it is a vector quantity Answer 3 Total distance = circumference of the circle = 2*π*r =2*22/7*7 = 44 m Total time taken to cover the distance= 1 min = 60 sec Average speed = 44/60 = 0.73m/s Average velocity= 0 m/s The average velocity is zero because the boy after completing one round back to its position from where he had started. The displacement is zero and therefore the average velocity is 0 m/s

Ans 1= when an object moves in a straight line distance =displacement Ans2= speed rate of change of distance Scalar quantity Velocity Rate of change of displacement Its a vector quantity Ans 3= avg speed-0.73333....m/s Avg velocity-0 m/s

1.speed=velocity 2.speed is scaler and velocity is vector quantity . speed=distance/t velocity=displacement/t 3.vector=average speed =11/15=0.73 m/s and averg velocity=0

Here diameter=14 Then, radius=7 Total time taken=60s Now, circumference of circle=2πr =2*22/7*7m =44m Therefore, average speed=total distance /total time =44m/60s =0.73m/s Again, average velocity=total displacement/total time =0m/60s =0m/s

Such teaching was excellent, I've cleared my doubts.Thank u sir