A particle starts from origin at t = 0 with a velocity 
and moves in x-y plane under the action of force which produces a constant acceleration of 
. The y-coordinate of the particle at the instant when its x-coordinate is 84 m is
Text Solution
Verified by ExpertsThe correct answer is:
C
The positions of the particle is given by
Where, 
is the position vector at t = 0
is the velocity at t = 0
Here, 
Compare it with 
we get
Given : x = 84 m
On solving, we get t = 6s
At t = 6s, y = (1) 
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