Define the coefficient of restitution between two colliding bodies and state its value for perfectly elastic and inelastic collision.
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The coefficient of restitution (COR) is the ratio of the final to initial relative velocity between two objects after they collide.
It normally ranges from 0 to 1 where 1 would be a perfectly elastic collision. A perfectly inelastic collision has a coefficient of 0, but a 0 value does not have to be perfectly inelastic.
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Explanation: coefficient of restitution(e)= -velocity of restitution/velocity of approach
It lies between 0 to 1
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