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Q.

A vehicle of mass 10kg is moving with a velocity of 2ms–1 . Find the magnitude of the force that is to be applied on the vehicle so that the vehicle have a velocity of 1ms–1 after traveling a distance of 10m .

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a

4 N

b

1.5 N

c

7.5 N

d

9.5 N

answer is B.

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Detailed Solution

F=m(v2−u2)2s     =10(1−4)2×10 = -1.5N
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