you throw a 20n rock vertically into the air from ground. you observe that when it is 15m above the grount it is travelling at a velocity of 25m/s. use work energy theorem to find its speed when it left the ground and its maximum height
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You observe that when it is 15.0 m above the ground, it is travelling at 25.0 m/s upward. Use the work-energy theorem to find a) its speed just as it left the ground; b) its maximum height. now all you have to do is plug in numbers. we can use the work-energy theorem again.
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