inf a body of mass 100 g having a kinetic energy of 201
14. A ball of mass 200 g falls from a height of 5 metres. What is its kinetic enero
90
JR
14
reaches the ground ? (g = 9.8 m/s2).
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Explanation:
Answer
height = 5m
mass = 200g
potential energy = mgh = 0.2 ∗ 5 ∗ 9.8 = 9.8J
Since potential energy at the highest point is equal to kinetic energy at lowest point , therefore kinetic energy will be 9.8J
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