Question

thrown downward at 10 m/s from 20 meters off of the ground. How long does it take to reach the ground?

Answer 1

Explanation:

Object thrown downwards at 10m/s from height of 20m. How much time will be taken

s = ut + ½ at²

20 = 0 + ½ ×10×t²

1÷t² = ½×10×-20

1÷t = ½×-200 = 100

t² = 100

t = sqrt (100) = 10 sec

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