Question

Distinguish between uniform linear motion and uniform circular motion with examples.

Answer 1

Uniform Linear motion:
1. An object is said to move in uniform linear motion , if it travels in straight line and covers equal DISTANCE in equal time interval.
2. No change in direction.
3.. SPEED is constant and constant velocity.
4. Acceleration is zero.
Example: A car moving forward at speed of 40km/h towards North direction.

Uniform circular motion:
1. When a body moves in circular path with uniform speed , it's motion is called uniform circular motion.
2. Motion is said to be accelerated.
3. SPEED is constant but direction of motion changes at every point so the magnitude of Velocity(that is SPEED) is constant but the direction changes continuously and thus VELOCITY is not constant.So, the motion is accelerated
Example:
An Athelete running in a circular path. Or a Stone rotated by a string attached to it(given than the speed is kept constant)