What is the answer to this question? A stone is dropped from the top of cliff. It is seen to hit the ground below after 3.5 secs. How high is the cliff?
An initially-stationary object which is allowed to fall freely under gravity drops a distance which is proportional to the square of the elapsed time. Height = gravity constant * time^2. Time = 3.5 s. Gravity constant = 9.8m/s/s. 9.8 * 3.5^2 = 120.05
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