A ball projected from the ground with speed 10m/s at an angle of 45^(@) with horizontal. It collides with a wall at a distance 2 m from the point of projection and returns to its original position. If the coefficient of restitution between the ball and wall is 1/x, find x.

A ball projected from the ground with speed 10m/s at an angle of 45^(@

1.	A ball projected from the ground with speed 10m/s at an angle of 45^(@) with horizontal. It collides with a wall at a distance 2 m from the point of projection and returns to its original position. If the coefficient of restitution between the ball and wall is 1/x, find x.
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