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Questions  

On a rough horizontal surface, a block of mass m is at rest. It suddenly receives a horizontal linear impulse J. How long it will continue to be in motion? Take g as the acceleration due to gravity and μ is the coefficient of kinetic friction.

a
J2μmg
b
J22μm2g
c
Jμmg
d
2Jμmg

detailed solution

Correct option is C

Fxt=Jhere F=μmgμmgt=J  ,       t=Jμmg

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