An object is dropped from the top of a tower. If it takes 4s for...
PHYSICS
WAEC 2012
An object is dropped from the top of a tower. If it takes 4s for it to reach the ground, calculate the height of the tower.(g = 10 ms-2, ignore air resistance)
- A. 20m
- B. 40m
- C. 80m
- D. 160m
Correct Answer: C. 80m
Explanation
H = \(\frac{1}{2} gt^2\)
\(\frac{1}{2} \times 10 \times 4^2 = 80\)
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