Question

Serving at a speed of 143 km/h, a tennis player hits the ball at a height of 2.55 m and an angle ? below the horizontal. The player serves at a distance of 12.2 m from the net, which is 0.91 m high. What is the angle ? such that the ball just crosses the net? The out line of the service box is 6.40 m from the net. How far does the ball land from the out line of the service box? (If the ball lands outside the out line, enter your answer as a positive number. If inside, enter as a negative number.)

Answer 1