Q.
The figure shows the velocity (v) of a particle plotted against time (t)
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a
The particle changes its direction of motion at some point
b
The acceleration of the particle remains constant
c
The displacement of the particle is zero
d
The initial and final speeds of the particle are the same
answer is A.
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Detailed Solution
For tT, v=+ve At t=T, v=0∴ Particle changes direction of velocity at t=Ts= Net area of v-t graph =0a= Slope of v-t graph = constant
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