Transverse & longitudinal waves
The continuous change in position of a body with respect to time and relative to the reference point or observer is called motion. Here the reference point can be considered as stationary or motionless objects surrounding the body.
Consider sun as reference point or observer the planets orbiting the sun are said to be in motion.
The position of a body is not
changing with time and relative to the reference
point then the body is said to be at rest or motionless.
chairs, tables, Television are some examples of objects
which are at rest. Rest and motion are relative terms for
example consider a person in a moving bus he is at rest
with respect to another person in the moving bus, but he
is in motion with respect person out side the bus.
When a body moves
equal distance in equal intervals of time then the body is
said to be in uniform motion.