Steve Boddeker's Energy and Society Ch 1 Homework

(a)Where did it come from? (b)What is the kinetic energy of the cart in 3b? (c)What is the speed of the 5 kg cart from part 3b? If you throw a ball straight up into the air, at some time it will stop rising and return to you. (a) What form of energy did the ball have just after being thrown? ................
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