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A car at 10 m/s stops uniformly in 5 s. Its retardation is
A2 m/s²
B5 m/s²
C0.5 m/s²
D50 m/s²
Answer & Solution
Correct answer: A. 2 m/s²
a = (0 - 10)/5 = -2 m/s², a retardation of 2 m/s².
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