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A body with mass 5 kg is acted upon by a...

A body with mass 5 kg is acted upon by a force `F = (-3hati + 4 hatj)` N . If its initial velocity at t = 0 is v = `(6 hati - 12 hatj) ms^(-1)` , the time at which it will just have a velocity along the Y- axis is

A

never

B

10 s

C

2 s

D

15 s

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The correct Answer is:
B
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A body with mass 5 kg is acted upon by a force vec(F) = (- 3 hat (i) + 4 hat (j)) N . If its initial velocity at t =0 is vec(v) = 6 hat(i) - 12 hat (j) ms^(-1) , the time at which it will just have a velocity along the y-axis is :

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RESONANCE ENGLISH-DAILY PRACTICE PROBLEM-DPP No.66
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