STANDARD Physics Motion In A Straight Line Class 11 Questions

Which of the following statements is incorrect?

The numerical ratio of distance to displacement is

A car is moving along a straight line OP as shown in the figure. It moves from O to P in 18 s and returns from P to Q in 6s. Which of the following statement is not correct regarding the motion of the car?

The position-time (x-t) graphs for two children A and B returning from their school O to their homes P and Q respectively are as shown in the figure. Choose the incorrect statement regarding these graphs.

The displacement-time graph of a moving particle is as shown in the figure. The instantaneous velocity of the particle is negative at the point

In the given v-t graph the distance travelled by the body in 5 seconds will be

Which one of the following represents displacement-time graph of two objects A and B moving with zero relative velocity?

A vehicle travels half the distance L with speed v₁ and the other half with speed v₂, then its average speed is

Assertion: The average and instantaneous velocities have same value in a uniform motion. Reason: In uniform motion, the velocity of an object increases uniformly.

Assertion: A particle may be momentarily at rest and yet have non-zero acceleration. Reason: The zero velocity of a particle at any instant does not necessarily imply zero acceleration at that instant.

A particle starts from origin O from rest and moves with a uniform acceleration along the positive x-axis. Identify all figures that correctly represents the motion qualitatively. (a = acceleration, v = velocity, x = displacement, t = time)