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Question

What is the difference between uniform linear motion and uniform circular motion ?

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Solution

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 every point.
Example:
An Athelete running in a circular path.
Uniform Linear Motion: Velocity is constant & thus it is a uniform motion. Acceleration is zero. Uniform Circular Motion: Velocity is not constant due to continuous change in Direction & thus it is not a uniform motion. Acceleration is called Centripetal acceleration.
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