text if the tennis player serves the ball horizontally boldsymbol38781
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\text { If the tennis player serves the ball horizontally }(\boldsymbol{\theta}=0) \text {, } а.calculate its velocity V if the center of the ball clears the 0.9-m net by150 mm.
b. Also find the distance s from the net to the point where the ball hits the court surface. Neglect air resistance and the effect of ball spin.