2. A ball of mass 2 kg is moving with speed of
10 m/s collides head on with another stationary
ball of mass 3 kg, If collision is perfectly inelastic
then the loss in kinetic energy will be
(1) 40 J
(2) 80 J
(3) 60 J
(4) 20 J
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Answer:
(3) 60J
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