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A body of mass 5kg starts from the origi...

A body of mass 5kg starts from the origin with an initial velocity of `barU= (30i+40j)m//s`. A constant force of `F= (-hati - 5 hatj)N` acts on the body . Find the time in which they- component of the velocity becomes zero .

A

5 s

B

20 s

C

40 s

D

80 s

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The correct Answer is:
C
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