Physics, 22.02.2021 09:00, londonval

Serving at a speed of 171 km/h, a tennis player hits the ball at a height of 3.1 m and an angle below the horizontal. The service line is 11.9 m from the net, which is 0.91 m high. What is the angle such that the ball just crosses the net?

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Serving at a speed of 171 km/h, a tennis player hits the ball at a height of 3.1 m and an angle belo...