An orange fruit drops to the ground from the top of a tree 45m tall....
PHYSICS
WAEC 1991
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
Correct Answer: A. 3.0s
Explanation
s = ut + \(\frac{1}{2}gt^2\)
45 = 0 + 5t2
t = 3s
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