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A train speeds up uniformly from 10 m/s to 30 m/s in 10 s. What is its acceleration?
A1 m/s^2
B2 m/s^2
C3 m/s^2
D4 m/s^2
Answer & Solution
Correct answer: B. 2 m/s^2
a = (v - u)/t = (30 - 10)/10 = 2 m/s^2.
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