A rock falls from a cliff and hits the ground at a velocity of 28m/s. How long did it take to fall?

Question

A rock falls from a cliff and hits the ground at a velocity of 28m/s. How long did it take to fall?

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Thông Đạt 4 years 2021-08-18T21:50:05+00:00 1 Answers 5 views 0

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  1. ngocdiep
    0
    2021-08-18T21:51:56+00:00
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    Answer:

    2.8s

    Explanation:

    =>a = v-u/t

    => t = v – u / t

    = 28-0 / 10

    = 2.8 s

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