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A ball of mass 0-80kg, moving with a speed of 5-0ms-1, collides with a wall at an angle of 40° to the normal to
the wall. It rebounds with no change of speed and at the same angle to the normal. The duration of the impact is
0-15s. Find each of the following.
(a) The average acceleration of the ball during the impact.
(b) The average force on the ball during impact.
(c)
The average force on the wall during the impact.

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