alleryA car uniformly accelerates from rest to 20 m/s in 10 seconds. Its acceleration is:
A200 m/s²
B10 m/s²
C2 m/s²
D0.5 m/s²
Answer & Solution
Correct answer: C. 2 m/s²
Acceleration = (v − u) / t = (20 − 0) / 10 = 2 m/s².
**Units:** change in velocity (m/s) per unit time (s) = m/s².
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