Question

i) A body of mass 20 kg is dropped from a height of 0.5m. Find its: Velocity and Kinetic Energy as it just reaches ground. ii) If two bodies have masses in the ratio 1:8 have their speed in the ratio 4:5 . Find ratio of kinetic energy.
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Answer 1

Answer:

kinetic energy = 9.8 I

kE1:KE2 = 2:25