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A body starting from rest reaches 20 m/s in a distance of 50 m. Its acceleration is
A8 m/s^2
B4 m/s^2
C0.4 m/s^2
D2 m/s^2
Answer & Solution
Correct answer: B. 4 m/s^2
a = v^2 / 2x = 400 / 100 = 4 m/s^2.
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