Q.

The displacement (x}-time (t) graph of a particle is shown in figure. Then, which of the following statement is correct?

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a

Particle starts with zero velocity and uniform acceleration.

b

Particle starts with non-zero velocity and uniform acceleration.

c

Particle starts with zero velocity and variable acceleration.

d

Particle starts with non-zero velocity and variable acceleration.

answer is A.

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Detailed Solution

From the given x-t graph, it is clear that

at   t=0,dxdt=0

  Velocity, v=dxdt=0, at t=0

As time passes dxdt increases and then decreases.

 Velocity and hence, acceleration changes.

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The displacement (x}-time (t) graph of a particle is shown in figure. Then, which of the following statement is correct?