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An object with mass 5 kg is acted upon b...

An object with mass 5 kg is acted upon by a force, `vecF = (-3hati + 4hatj)` N. If its initial velocity at t = 0 is `vecv = (6hati – 12hatj)` m `s^(-1)`, the time at which it will just have a velocity along y-axis is

A

2s

B

5s

C

15s

D

10s

Text Solution

Verified by Experts

The correct Answer is:
D
`U_x = 6 ,V_x =0 a_x = (-3)/(5) m//s^2`
` v_x =U_x +a_x t 0=6 +(-3)/( 5)timplies t=10s`
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