alleryA bus starts from rest and accelerates at 2 m/s² for 10 s. The distance it travels in this time is:
A200 m
B10 m
C20 m
D100 m
Answer & Solution
Correct answer: D. 100 m
Using s = ut + ½at² with u = 0, a = 2, t = 10: s = 0 + ½ × 2 × 100 = 100 m.
(Alternative: average velocity = (0 + 20)/2 = 10 m/s, distance = avg.velocity × time = 100 m.)
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