Kinematics is branch of mechanics which deals with the
study of motion of the objects without taking into account
the cause of their motion.
Rest and Motion
An object is said to be at rest if it does not change its
position which respect to its surroundings with time and
said to be in motion if it changes its position with respect
to its surrounding with time.
Rectilinear motion moving car on horizontal road,
motion under gravity etc.
Angular motion such as particle going on a circle,
projectile motion, rotation of machine shaft etc.
Rotational motion such as motion of a fan.
It an object travels equal distances in equal intervals of
time, then it is said to be in uniform motion.
It an object travels unequal distances in equal intervals
of time, then it is said to be in non-uniform motion