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a rock fell from a cliff at 108 feet high and landed on an embankment feet from the ground. find the amount if time it would have taken the rock to fall.

User Romanlv
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1 Answer

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To solve this problem we will directly use the formula:


h=(1)/(2)gt^2..........Equation 1

where symbols have their usual meanings.

Here g=32.2 ft/s^2 and h=108 feet

Therefore, from Equation 1 we will get:


t=\sqrt{(2h)/(g)}....Equation 2

Plugging in the values in Equation 2 we get:


t=\sqrt{(2* 108)/(32.2)}\approx 2.59 seconds.

Therefore, the amount of time it would have taken the rock to fall is 2.59 seconds.

User Eenoku
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