A ball is thrown downward on the 30° inclined plane so that when it rebounds perpendicular to the incline it has a velocity of vA = 40 ft/s. Determine the distance R where it strikes the plane at B.

1. 

12-15

A ball is thrown downward on the 30° inclined plane so that when it rebounds perpendicular to the incline it has a velocity of vA = 40 ft/s. Determine the distance R where it strikes the plane at B.
[A]. R = 66.3 ft
[B]. R = 99.4 ft
[C]. R = 172.1 ft
[D]. R = 344 ft

Answer: Option A

Explanation:

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