Potential Energy
A series of high school Physics lectures.
Work and Gravitational Potential Energy, Conservative and Nonconservative Forces, Calculating Potential Energy.
Work and Gravitational Potential Energy
This video explains the relationship between the change in gravitational potential energy and the work done by an external force.
This video explains the what gravitational potential energy is. He also shows you how to calculate changes in potential energy and explains the relationship between potential energy and work.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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