# In order to gain velocity of 12 m/s , how long should a force of 30 N be exerted on a body of mass 5 kg ?

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by aradh2020

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by aradh2020

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Force = mass * acceleration by Newton's law.

acceleration a = 30 N / 5 kg = 6 m/s²

final velocity = v, initial velocity = u, time duration = t

we know from equations of dynamics/kinematics:

v = u + a t

t = (v - u) / a = 12 / 6 = 2 seconds.

acceleration a = 30 N / 5 kg = 6 m/s²

final velocity = v, initial velocity = u, time duration = t

we know from equations of dynamics/kinematics:

v = u + a t

t = (v - u) / a = 12 / 6 = 2 seconds.

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