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A metal ball falls from a height 1 m on a steel plate and jumps upto a height of 0.81 m. Find the coefficient of restitution.

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A metal ball falls from a height 1 m on a steel plate and jumps upto a height of 0.81 m. Find the coefficient of restitution.

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As the ball falls to the steel plate P.E changes to kinetic energy.

After rebounding, kinetic energy changes to P.E.

Dividing equation (2) by (1), we get,

As ground is stationary, both its initial and final velocities are zero.

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