As per the given figure,a small ball P s...

As per the given figure,a small ball P slides down the quadrant of a circle and hits the other ball `Q` of equal mass which is initially at rest.Neglecting the effect of friction and assume the collision to be elastic, the velocity of ball `Q` after collision will be `(g=10m/s^(2))`

`4m/s`

`0`

`0.25m/s`

`2m/s`

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