Height of the cliff, h:
h = 48.0 m/s * 5.20 s * sin(60.0°) = 144 m
Speed of the stone just before impact at A:
v = 48.0 m/s * cos(60.0°) = 24.0 m/s
Maximum height H reached above the ground:
H = 48.0 m/s * 5.20 s * sin(60.0°) - (1/2) * 9.8 m/s^2 * (5.20 s)^2 = 144 m - 131.44 m = 12.56 m
A stone is projected at a cliff of height h with an initial speed of 48.0 m/s directed 60.0° above the horizontal. The stone strikes at A, 5.20 s after launching. Find the height, h, of the cliff. Find the speed of the stone just before impact at A. Find the maximum height H reached above the ground.
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