A tennis player standing on a cliff that is above sea level strikes a tennis ball…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A tennis player standing on a cliff that is 15m above sea level strikes a tennis ball with an initial speed of 20m/s at an angle of 30∘ above the horizontal. The ball leaves the racket exactly at the edge of the cliff and eventually lands on the beach below. Neglect air resistance and take g=9.8m/s2.
(a) Determine the time the ball spends in the air before reaching the beach.
(b) Calculate how far horizontally from the cliff edge the ball lands.
(c) Find the magnitude of the ball’s velocity just before impact with the beach.