Work, Energy, and Power - Basic Introduction 

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time stamps: 0:13 | Work 1:28 | Energy 4:49 | Example 1 11:19 | Example 2 17:58 | Conservative forces vs non-conservative forces 19:30 | Example 3 22:43 | Power 25:00 | Example 4 28:22 | Practice problems

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44:36 is the beginning of the problems answering

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0:13 Work 1:28 Energy 1:57 Kinetic Energy 2:26 Potential Energy 2:52 KE Formula 3:12 PE Formula 4:48 Example 1 8:12 Force and displacement (opposite and same direction) 9:05 Force and displacement (perpendicular direction) 9:56 Focusing on the object (referring to example 1) 10:34 Focusing on the ball (referring to example 1) 11:19 Example 2

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Mr. Paresh Dave has given the following writing the thumbs up. Great. WHY EINSTEIN'S EQUATIONS PREDICT THAT SPACE IS EXPANDING OR CONTRACTING IN AND WITH TIME: Ultimately and truly, TIME is possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. INSTANTANEITY is FUNDAMENTAL to the FULL and proper understanding of physics/physical experience. This NECESSARILY represents, INVOLVES, AND describes what is possible/potential AND actual IN BALANCE. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 IS F=ma. ACCORDINGLY, the known mathematical unification of Einstein's equations AND Maxwell's equations (given the addition of A FOURTH SPATIAL DIMENSION) is proven and explained. BALANCE AND completeness go hand in hand. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. The stars AND PLANETS are POINTS in the night sky. Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black. (Notice the term c4 from Einstein's equations.) It is CLEARLY proven. Gravity IS ELECTROMAGNETISM/ENERGY. This is the ultimate unification of physics/physical experience. It ALL makes perfect sense. I have truly unified physics. Consider THE MAN who IS standing on what is the Earth/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. THOUGHTS ARE INVISIBLE. (Notice that THE DOME of a person's eye is ALSO VISIBLE.) OVERLAY what is THE EYE in BALANCED RELATION to/WITH what is THE EARTH. The INTEGRATED EXTENSIVENESS of THOUGHT (AND DESCRIPTION) is improved in the truly superior mind. Indeed, the ability of thought to describe OR reconfigure sensory experience is ULTIMATELY dependent upon the extent to which THOUGHT IS SIMILAR TO sensory experience. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. It is ALL CLEARLY proven. In fact, I have also clarified, clearly identified, and corrected the limited notion of curved "SPACE". MY UNIFICATION OF PHYSICS SURPASSES ALL OTHERS. E=mc2 IS F=ma. A galaxy is basically FLAT. Think !!! GREAT. Notice the black space of what is THE EYE as well. It ALL makes perfect sense. ELECTROMAGNETISM/ENERGY IS GRAVITY. The Sun AND the Earth are F=ma AND E=mc2, AS E=mc2 IS F=ma. GREAT !!! LOOK at what is the BLUE SKY. The EARTH is ALSO blue. NOW, the stars AND PLANETS are POINTS in the night sky. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. Beautiful !!! Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. This explains F=ma AND E=mc2. ACCORDINGLY, the rotation of what is THE MOON MATCHES it's revolution. It is fully, CLEARLY, and consistently proven. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. By Frank DiMeglio