a racing car has a uniform acceleration 4m/s2 how much the distance it covers in 2 seconds starting from rest
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Using the relation v² - u² = 2 a s,
s = 1/2 a ( v² - u²)= 1/2×4 ( 40² - 0²) = 1/8(1600–0)= 1600/8= 200 m.
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