Question

The Displacement-time graph of a particle moving in a straight line is as shown in the figure. State whether the motion is accelerated or not. Given $s_0=-20mand{t}_0=4second$

• A. Yes
  
• B. No
• C. Insufficient information
  
• D. None of the above
  

Answer 1

The correct option is B No

Slope of displacement- time graph gives us the velocity of the particle.

In the given case, slope of displacement-time graph is constant. Hence, velocity of particle is constant.

We know that acceleration is defined as ratio of change in velocity to the time interval.

$a=\frac{changeinvelocity}{timeinterval}$

Since, here there is no change in the velocity, hence, acceleration is $0$.

Hence, the motion is not accelerated.