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A coin dropped from the top of a precipice takes 5.00 s to hit the ground. How high is the precipice? A) 49.1 m B) 245 m C) 123 m D) 25.5 m
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A coin dropped from the top of a precipice takes 5.00 s to hit the ground. How high is the precipice?

A) 49.1 m
B) 245 m
C) 123 m
D) 25.5 m

User Shan Dou
by
7.8k points

1 Answer

4 votes
Since coin is dropped, initial velocity of coin must be zero.
∴ s =
(1)/(2) a t^(2)
∴ s =
(1)/(2)×9.8×5²
= 122.5m ~ 123m
User Steve Wilhelm
by
8.4k points
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