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4. A car at rest accelerates uniformly to a speed of 40 ms' in 20 s How much distance is covered by the
car? (a) 400 m (b) 200 m (c) 400 cm (d) 200 cm
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Answer:
(a) 400 m
Explanation:
a=40/20=2 m/s^2
s= 0.5×2×400=400m
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