# PS5 - 5.1 A player hits a tennis ball of mass m with...

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5.1 A player hits a tennis ball of mass m with initial horizontal speed V at a height h . The ball bounces at Point A and rises to a maximum height 2 3 h where the ball’s horizontal speed is 5 9 V . The duration of the ball’s impact at Point A is τ . (a) Determine the velocity at Point A just before, v ,andju s ta f t e r , v I , the impact. Express your answers in terms of V , h and g , the acceleration of gravity. (b) Using the Principle of Impulse and Momentum, determine the average impulsive force vector, F , exerted on the ball at Point A. (c) Compute v , v I and F for mg =2 ounces, V =54 ft/sec, h =4 . 5 ft and τ =4 milliseconds. Problem 5.1 5.2 Aba l lofmass m rolls into a horizontal corner with initial velocity v . After it reflects from the two walls forming the corner, it encounters a spring. The coefficient of restitution of the ball is e and the spring constant is

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PS5 - 5.1 A player hits a tennis ball of mass m with...

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