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A ball moving with velocity 2m/s collide...

A ball moving with velocity 2m/s collides head on with another stationary ball of double the mass . If coefficient of restitution is `0.5` then their velocities after collision will be `………. ms^(-1)` .

Text Solution

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Suppose after the collison the block of mass m moes at a velocity `u_1` and the block of mass 2m moves at a velocity `u_2`. By conservationfo momentum,
`mv=mu_1+2mu_2` ……..i
the velocity of seperation is `u_2-u_1` and the velocity of approach is v.
So, `u_2-u_1=v/2`
find i and ii `u_1=0 and u_2=v/2`
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