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What are uniform and non-uniform motion?
A body is said to be in motion when its position changes continuously with respect to a reference point. For example, when the position of a car changes continuously with respect to some stationary objects like a house etc. we say that a the car is in motion. Motion can be of two types i.e. uniform motion and non-uniform motion.
Uniform motion
A body is said to be in uniform motion if it travels equal distances in equal intervals of time, no matter how small these time intervals may be. If we draw a distance-time graph for uniform motion then it will be a straight line. For better understanding we can take an example, a car is running at a constant speed say 20 meters per second, will cover equal distances of 20 meters, every second, so its motion will be uniform.
Non-uniform motion
A body is said to be in a non-uniform motion if it travels unequal distances in equal intervals of time. For example, if we drop a ball from the roof of a tall building, we will notice that it will cover unequal distances in equal intervals of time. Like, 5 meters in the 1st second, 15 meters in the 2nd second, and so on. Thus, a freely falling ball will cover smaller distances in the first ‘1 second’ and larger distances in the later ‘1 second’ intervals. Therefore, we can say that the motion of a freely falling body is an example of non-uniform motion. The distance-time graph of the non-uniform motion is a curved line. Non-Uniform motion is also known as accelerated motion.
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