Question

an object is dropped from height of 80 m find out time after which it will reach the ground​

Answer 1

Answer:

4 seconds

Explanation:

give:  s = 80m, g = 10 m/s², u =0 m/s

s = ut + 1/2at²

80 = 0 + 1/2 * 10 * t²

80 = 5t²

t² = 16

t = 4 seconds

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