At the moment when a shotputter releases a 5.00 kg shot, the shot is 3.00 m above the ground and travelling at
15.0 m/s. It reaches a maximum height of 14.5 m above the ground and then falls to the ground. If air resistance is
negligible,
*What was the kinetic energy of the shot just as it struck the ground?
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Answer:
562.5 J (Joule)
Explanation:
the mass of the object is 5kg
the speed of the object is 15 m/s
k.e = 1/2mv2
= 1/2×5×15×15
=1/2×5×225
=2.5×225
=562.5 j
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