A ball of mass 1 kg slow drown from a speed of 5m/s to that of 3m/s . Calculate the change in kinetic energy of the ball
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change in K.E.= K2-K1
= 1/2MV2^2 - 1/2MV1^2
= 1/2× 1× (3)^2- 1/2×1×(5)^2
= 9/2-25/2
=-8
= 1/2MV2^2 - 1/2MV1^2
= 1/2× 1× (3)^2- 1/2×1×(5)^2
= 9/2-25/2
=-8
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