Question: Problem 7 : A 4 . 8 0 kg watermelon is dropped from rest from the roof of an 1 8 . 0 m -

Problem 7: A 4.80 kg watermelon is dropped from rest from the roof of an 18.0 m-tall building and feels no appreciable air resistance. (a) Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. (b) Just before it strikes the ground, what are the watermelons (i) kinetic energy and (ii) speed?

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