An orange fruit drops to the ground from the top of a tree 45m tall. How long does it takes to reach the ground? (g = 10ms-2)

A.

3.0s

B.

4.5s

C.

6.0s

D.

7.5s

E.

9.0s

View answer & explanation

Correct answer is A

s = ut + \(\frac{1}{2}gt^2\)

45 = 0 + 5t2

t = 3s

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