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Q.

A body of mass 5kg is kept on a rough horizontal surface and it is under the action of 50N horizontal force. If coefficient of friction in between the surfaces is 1.0, the distance it travels in 3 sec is

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a

1.5m

b

2m

c

6m

d

0.9m

answer is C.

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Detailed Solution

F – f = ma
F - µmg = ma ⇒ 50 -1 x 5 x 9.8 = 5a
a = 10 - 9.8 = 0.2m/s2

S=12at2=12×0.2×9


⇒  S = 0.9m

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