A 150 kg snowball is fired from a cliff 130 m high with an, Ask an Expert

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A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial velocity of 14.0 m/s, directed 41.0° above the horizontal.

(a) What is the change in the gravitational potential energy of the snowball-Earth system during the flight?

__ J

(b) If that gravitational potential energy is taken to be zero at the height of the cliff, what is its value when the snowball reaches the ground?

__ J

__ m/s

(d) Repeat part (c) if the initial velocity makes an angle of 20o with the horizontal..

__ m/s

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