Question

what is motion, uniform motion, rest

Answer 1

Motion.
A body is said to be in motion if it changes its position with respect to its surroundings
Uniform motion
A body has uniform motion if it traveles equal distance in equal intervalsof time
Rest
A body is said to be at rest if it doesn't changes its position with respect to its surroundings

Answer 2

 Motion is  called the action or process of moving or being moved. And uniform motion describes an object that is moving in a specific direction at a constant speed.