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Q.

The position of a particle moving in the XY-plane at any time ‘t’ is given by x=(3t2 - 6t) m ; y = (t2 – 2t) m. Select the correct statement about the moving particle from the following

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a

The velocity of the particle is zero at t = 1 second

b

The velocity of the particle is zero at t = 0 second

c

The velocity and acceleration of the particle are never zero

d

The acceleration of the particle is zero at t = 0 second

answer is C.

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Detailed Solution

vx=dxdt=6t−6

vy=dydt=2t−2
at t = 1 ⇒ vx = 0 and yy = 0

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