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Paul drops a rock from the top of a 160-m cliff. How long will it take...

Paul drops a rock from the top of a 160-m cliff. How long will it take the rock to reach the bottom of the cliff? How long will it take the rock to drop 80-m? Why isn't the time it took to fall 80-m half of what it took to drop 160-m?
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Answer #1

Using the equation s=ut+1/2at²

The question can be solved which is given below

It didnt take half the time because the time is proportional to underroot of distance.

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