A force of 6 N acts on a body of mass 1 kg initially at rest and during this time, the body attains a velocity of 30 m/s.
A force of 6 N acts on a body of mass 1 kg initially at rest and during this time, the body attains a velocity of 30 m/s. The time for which the force acts on a body is
(A) 10 second
(B) 8 second
(C) 7 second
(D) 5 second
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Correct option is:(D) 5 second
\(F = \frac{dp}{dt}\)
\(6 = \frac{mv}{dt}\)
\(6 = \frac{1 \times 30}{dt}\)
\(\Delta t = \frac{30}{6}\)
\(\Delta t = 5 sec\)
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