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Question
A force acts for 10 s on a stationary body of mass 100 kg, after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate : The acceleration produced by the force
Solution
Mass, m = 100 kg
Distance moved, s = 100 m
Initial velocity, u = 0
From Newton's third equation of motion,
v2 - u2 = 2as.
Or, a = (v2 - u2) /2s.
Or, a = [ (202 - 02)/ 2(100) ] ms-2.
Or, a = 2 ms-2.
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