A body accelerates uniformly from rest at 2ms -2 . Calculate the magnitude of its
PHYSICS
WAEC 2007
A body accelerates uniformly from rest at 2ms-2. Calculate the magnitude of its velocity after travelling 9m
- A. 4.5 ms-1
- B. 6.0ms-1
- C. 18.0-1
- D. 36.0-1
Correct Answer: B. 6.0ms-1
Explanation
v = \(\sqrt{U^2} + 2as = \sqrt{0^2} + 2 \times 2 \times 9 = 6\)m/s
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