Define motion. What do you understand by the terms ‘uniform motion’? Explain with examples.
when the position of a body changes continuously with respect to a stationary object taken as reference point, the body is said to be in motion.
A body has uniform motion if it travels equal distances in equal intervals of time irrespective of the interval. Example: motion of earth around sun.
Non-uniform motion: A body has a non-uniform motion if it travels unequal distances in equal intervals of time. For example: dropping a ball from the roof of a tall building .