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A body of mass 40kg having velocity 4 m/s collides with another body of mass 60kg having velocity 2 m/s. If the collision is inelastic, then loss in kinetic energy (in J) will be

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answer is 48.

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Detailed Solution

Loss in kinetic energy =12m1m2(u1−u2)2m1+m2=1240×6040+60(4−2)2=48 Joule

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