Question

Distinguish between uniform motion and non-uniform motion.

Answer 1

Hint: Name itself shows meaning of uniform motion and non-uniform motion. Uniform means constant and non-uniform means not constant. Time versus displacement graph of uniform motion is straight while the time versus distance graph of non-uniform motion is curved.

Complete step by step solution:
Uniform motion:
When an object covers an equal distance in equal interval of time, the motion is called uniform motion. Movement of a body in uniform motion is along a straight line with steady speed. In this motion, average speed is similar to actual speed of the object. If you will talk about a graph of time versus distance then the graph shows a straight line. Rectilinear motion has zero acceleration.
Example of uniform motion: A body moving with a constant speed in a straight line has uniform motion.
Non-uniform motion:
When an object covers an unequal distance in equal interval of time, the motion is called non-uniform motion. Movement of an object in non-uniform motion is along a straight line with variable speed. Average speed is different from actual speed of object. If you will talk about a graph of time versus distance then the graph shows a curved line.
Example of non-uniform motion: circular motion is an example of non-uniform motion.

Note: In uniform motion, motion of body travels in a straight line and velocity remains constant along that line as it covers equal distance in equal interval of time, irrespective of the length of the time. Momentum of a body is also along a straight line but with constant speed. In non-uniform motion, the body does not travel in a straight line and velocity or speed does not remain constant along that line as it does not cover equal distance in equal interval of time, irrespective of the length of the time. Momentum of a body is also along a straight line but not at constant speed.