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A body of mass 5kg starts from origin wi...

A body of mass 5kg starts from origin with a velocity `baru = (30hati +40hatj)ms^(-1)` . If a constant force `F=-(hati+5hatj)N` acts on the body, then pick up the correct statements

A

y - component of the velocity becomes zero at t = 40 second

B

X- component of the velocity becomes zero at t = 180 second

C

body will never attain permanent rest

D

the direction of motion changes only once along x and y- directions

Text Solution

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The correct Answer is:
A, B, C, D
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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 .