Motion is defined as the change in an object's position from its initial position to its final position through time. The physical characteristics can be used to characterize it.
Kinematics is the study of motion in a straight line route.
Straight-line motion with constant acceleration is the most basic accelerated motion.
The velocity varies at the same rate throughout the motion in this scenario. This is a unique circumstance, yet one that occurs frequently in nature.
A jet fighter being propelled off the deck of an aircraft carrier is an example of straight-line motion with practically constant acceleration.