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प्रश्न
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 velocity acquired by the body.
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उत्तर
Mass, m = 100 kg
Distance moved, s = 100 m
Initial velocity, u = 0
Because the body moves through a distance of 100 m in 5 s,
Velocity of the body = `"Distance moved"/"time taken"`
Velocity = `100/5`
= 20 m/s
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