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A body falling from a height of 10m rebounds from hard floor. If it loses 20% energy in the impact, then coefficient of restitution is
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Correct option is A
As 20% energy lost in collision thereforemgh2=80% of mgh1 ⇒h2h1=0.8but e=h2h1=0.8=0.89
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A body of mass m moving with velocity v makes a head-on collision with another body of mass 2 m which is initially at rest. The loss of kinetic energy of the colliding body (mass m) is
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