JAMB Physics 2020 Objective — Question 28
Question 28 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2020 Objective paper, with the correct answer and a full explanation.
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28. A stone which is dropped into a dry well hits the bottom in 2.2s. How deep is the well?
- A. A. 2.4m
- B. B. 24.2mCorrect
- C. C. 40.4m
- D. D. 48.4m
Explanation
s = ut + (1/2)at^2 = 0 + 0.5x10x2.2^2 = 0.5x10x4.84 = 24.2m.
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