Question

Choose incorrect statement.

• A. Particle A, B and C changes their direction during motion one time
• B. Acceleration of particle A, B and D are constant
• C. Particle A and B retarded initially then speed up
• D. Direction of motion of particle D remain unchanged

Answer 1

The correct option is B Acceleration of particle A, B and D are constant

Slope of v-t graph gives the acceleration of the particle.

As the slope of particle A and B is constant, thus the particles A and B move with constant acceleration.

But for particle D, its slope changes at the instant $t=T_o$, thus the particle D accelerates initially and then retards.Hence the acceleration of particle D is not constant.