A body of mass m is moving with speed v ...

A body of mass m is moving with speed v makes a one-dimensional collision with a stationary body of same mass on a horizontal table . They are in connect for the a very small time interval `Deltat`. The contact force between them varies varies as shown in the graph. ( Neglect friction)

The coefficient of restitution for the collision will be

`3/4`

`1/2`

`2/3`

`1/4`

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