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Cerrena [4.2K]
3 years ago
5

A student drops a rock from a bridge to the water 12m below. How many seconds does it take the rock to hit the water?

Physics
1 answer:
ANEK [815]3 years ago
7 0
R = \frac{g t^{2} }{2}
r - displacement or height
t - time taken
g = 10 m/s-2
t = square root from 2r/g = \sqrt{ \frac{2 x 12}{10} } = 1.5 seconds
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