Uniform and Non-uniform Motion

In our day-to-day life, we see several motions of living and non-living objects, whether birds, animals, fishes, cars, trains, etc. Masses of objects are surrounding us; some stay at rest while others are in motion. A body is said to be in motion when its point changes continuously with respect to a still object taken as a reference point. We all know that the mutual characteristic of the entire moving object is that they change their position with respect to time. For example, when the position of the car changes constantly with respect to some stationary objects like houses or schools, etc., we say that a car is moving, or the car is in motion. Motion can be of two kinds.
1. Uniform motion
2. Non-Uniform motion

1. Uniform motion

“In physics, uniform motion is defined as the motion where the velocity of the body travelling in a straight line remains the same. When the distance travelled by a moving thing is the same at several time intervals, regardless of the time length, the motion is said to be uniform motion.”

For example,

• The hour hand of the clock: It moves with uniform speed, completing movement of a specific distance in an hour.
• An aeroplane is cruising at a level height and a steady speed.
• A car is going along a straight, level road at a steady speed.

2. Non-Uniform motion

Non-uniform motion is used to mean the movement in which the object does not cover the same distance in the same distances in the same time intervals, regardless of the length of the time intervals. Every time the speed of the moving object changes by a different proportion at the same time interval, the motion of the body is observed as non-uniform motion.

For example:
1. A horse running.
2. A bouncy ball.
3. A car coming to a halt.