The speedometer of the car indicates a constant reading. Is the car in uniform motion ? Explain.

The speedometer of a bike or car gives

Explain the terms uniform and non-uniform motions.

A bob is hanging over a pulley inside a car through a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration 'a' directed horizontally as shown in figure. Other end of the string is pulled with constant acceleration 'a' vertically. The tension in the string is equal to

Assertion (A) The speed of a body in uniform circular motion is constant. Reason ( R) In uniform circular motion, the acceleration of the body is constant .

(A) : The speed of particle remains constant in uniform circular motion (R ) : No force is acting on the particle in uniform circular motion.

A ball hangs from a string inside a rail road car moving along a straight track. The string is observed to be inclined towards the rear of the car making a constant small angle with the vertical. It shows that the car is