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A rock is thrown from a cliff and hits the ground 5 seconds later at a distance of 50 meters from the cliff How high was the cliff?
Wiki User
∙ 14y ago
Assuming you throw the rock horizontally off the cliff it drops down at the acceletrtion of gravity.
height= 1/2 gt^2
With g = 9.8 m/sec and t = 5 seconds we have
height = (1/2) (9.8)(5)(5) = 122.5 meters
notice it has nothing todo with the 50 meter distance, which depends on the horizontal velocity.
Wiki User
∙ 14y ago
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