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A moving body of mass m makes a head on elastic collision with another body of mass `2m` which is initially at rest. Find the fraction of kinetic energy lost by the colliding particles after collision.

Text Solution

Verified by Experts

Substituting the values in above result
`(K_i-K_f)/(K_i)=(4m_1m_2)/((m_1+m_2)^2)`
`=(4xxmxx2m)/((m+2m)^2)`
`=8/9`
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