A ball is launched from the edge of a -high cliff with an initial speed of and lands…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A ball is launched from the edge of a 10m-high cliff with an initial speed of 20ms−1 and lands on level ground 30m horizontally from the launch point. Which of the following launch angles, measured above the horizontal, will allow the ball to land at the desired spot?
(a) Approximately 24∘ or 66∘
(b) 45∘ only
(c) Approximately 2∘ or 70∘
(d) Approximately 15∘ or 60∘