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

A body of mass 5 kg starts from the origin with an initial velocity `vecu=30hati+40hatjms^(-1)`. If a constant force `vecF=-(hati+5hatj)N` acts on the body, the time in which the y-component of the velocity becomes zero is

A

`5s`

B

`20s`

C

`40s`

D

`80s`

Text Solution

Verified by Experts

The correct Answer is:
C

`V = u + at, a = (F)/(m)`
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