Question

Differentiate between a uniform linear motion and a uniform circular motion.

Answer 1

When a particle moves with a constant speed along a straight path, its motion is said to be uniform linear motion.
When a particle moves with a constant speed in a circular path, its motion is said to be uniform circular motion.

Differences:

Uniform linear motion	Uniform circular motion
1. The particle travels equal distance along the straight path in equal intervals of time.	1. The particle travels equal distance along the circular path in equal intervals of time.
2. The direction of motion is fixed.	2. The direction of motion keeps on changing at each point of the circular path.
3. Velocity as well as the speed is constant.	3. Speed is constant, but the velocity is variable.
4. It is a non-accelerated motion.	4. This is an accelerated motion.
5. The magnitude of acceleration is zero.	5. The magnitude of acceleration is constant, but its direction is changing.
6. Example: A car moving with uniform speed of 10 km/hr on a straight road.	6. Example: Motion of earth around the sun.