A small ball of mass m collide with a smooth wall, moving with constant speed u at an angle θ with the normal to the wall. After collision, the ball moves at the same angle θ with the normal to the wall with the same constant speed. Find the average impulse on the ball.

A small ball of mass m collide with a smooth wall, moving with constan

1.	A small ball of mass m collide with a smooth wall, moving with constant speed u at an angle θ with the normal to the wall. After collision, the ball moves at the same angle θ with the normal to the wall with the same constant speed. Find the average impulse on the ball.
Answer» A small ball of mass $m$ collide with a smooth wall, moving with constant speed $u$ at an angle $θ$ with the normal to the wall. After collision, the ball moves at the same angle $θ$ with the normal to the wall with the same constant speed. Find the average impulse on the ball.

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A small ball of mass m collide with a smooth wall, moving with constant speed u at an angle θ with the normal to the wall. After collision, the ball moves at the same angle θ with the normal to the wall with the same constant speed. Find the average impulse on the ball.

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