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It was observed that a tennis ball when served horizontally a distance h above the ground strikes the smooth ground at B a distance d away. Determine the initial velocity { v }_{ A } of the ball and the velocity { v }_{ B } (and θ) of the ball just after it strikes the court at B. The coefficient of restitution is e. Given: h = 7.5 ft , d = 20 ft , e = 0.7 , g = { 32.2ft/s }^{ 2 }

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