First slide

Collisions

Question

A ball is released from certain height. It loses 50% of its kinetic energy on striking the ground. It will attain a height again equal to

Easy

A

One fourth the initial height
B

Half the initial height
C

Three fourth initial height
D

None of these

Solution

Because 50% loss in kinetic energy will affect its potential energy and due to this ball will attain only half of the initial height.

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