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A block of mass 1 kg starts from rest at...

A block of mass 1 kg starts from rest at x = 0 and moves along the X - axis under the action of a force F = kt, where t is time and `k=1" Ns"^(-1)`. The distance, the block will travel in 6 seconds is

A

36 m

B

72 m

C

108 m

D

18 m

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