Kinematics in One Dimension Practice Problems: Constant Speed and Acceleration 

there is a mistake on the second question i think you forgot to square the time because the equation is such that s=ut+1/2(a)(t)^2

hello teacher I. think that the ans in min 16:57 should have been 26.1. because the d=0.5at but t should be squared

There's a mistake with the second question in the second part It's supposed to be d=a(t×t)÷2

for question 2 you have t^2 so it should be 26.1m if that's right ?

I thought maybe for the part where the trains are travelling in same direction , we should say time to catch the slower train is found by using only speed of faster train and distance apart

I like the way your voice sounds

In the second Question the time must be squared and the correct formula is s = ut + (1/2)at²

In 34:47 its should be t = 4 hours.

For the bicycle problem Vi=10m/s D=780m A= 0.1m/s^2 and T= 60s. I get different final velocities depending on the formula used. For D=1/2(vi+vf)t I get 19.33, but for vf=vi+at and vf^2=Vi^2+2ad I get 16. What am I doing wrong?

for the bus and car problem, the bus has constant speed not acceleration, so should be d=vt

what is the relative velocity thing you did for problem 6 ? I dont get it.

i love this explanation its help me every time

sir which chapters do i need to know from physics 1 to do physics 2?.. i use the book (physics for scientists and engineers with modern physics 8th).. do i need to know all 23 chapters form physics 1 respectively in order to do physics 2 or just a small bunch of it?

Is not it that the trains meet after 4 hours?

21:00 the acceleration is not constant so we cant use the formula Vf_Vi = 2ad

You know your stuff❤❤

For problem 2 can you use d=1/2(Vo+Vf)t as the equation instead?

Life saver😊

great help,thank you

Great but at some point the questions are not visible i mean like being blurred

4s I thought should be in 4h

i don't understand the last question it's not clear like the other ones but great job

Great help

This train problem at 34min... two trains that are 600 miles apart? really 4s? they mu st be worlds fastest two trains

bruhhh r u fr in the second question??? 4.5 meters in a span of 5seconds???????

Hello, I would like to Collab with you sir

mistake in second question

What is this subject?😵