A jumper has mass of 52 kg. She is moving with a velocity of 3 m/s at a height of 50 m above the ground. Determine the total mechanical energy of the jumper and work done to throw a shot put of weight 2 kg up to height 20 m.
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Answer: mechanical energy =potential+ kinitic energy
=mgh+ 1/2m
52 x 10 x 50 + 52 x 9 ÷2
2600+ 26 x 9
2600+ 234
2834
Explanation:
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