find the speed (in m/s ) of the ball just after collision.

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A ball moving vertically downward with a speed of 10 m/s collides with a platform. The platform moves with a velocity of 5m/s in downward direction. If e = 0.8, find the speed (in m/s ) of the ball just after collision.
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Sep
A ball moving vertically downward with a speed of 10 m/s collides with a platform. The platform moves with a velocity of 5m/s in downward direction. If e = 0.8, find the speed (in m/s ) of the ball just after collision. A ball moving vertically downward with a speed of 10 m/s collides with [...]
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