If an object changes its position with respect to a fixed point then the object is said to be in the state of motion.
Reference point:
It is a fixed point that acts as a point of reference for an object.
Uniform Motion:
When an object covers equal distances in an equal interval of time, then it is said to be Uniform motion.
Non-Uniform Motion:
When an object covers unequal distances in an equal interval of time, then it is said to be Non-Uniform motion.
Distance:
It is defined as the total path covered by an object. Its SI unit is meter.
Displacement:
Change in position (between initial and final state). Its SI unit is meter.
Speed:
It is a scalar quantity that is defined as the distance covered per unit time. Its SI unit (International System of Units) is meter/Second.
Average Speed:
It is the speed through which an object moves throughout the journey.
Instantaneous Speed:
It is the speed of an object at a particular instant.
Velocity:
It is a vector quantity that is defined as the displacement covered per unit time. It can be also referred to as speed with direction. Its SI unit (International System of Units) is meter/Second.
Acceleration:
It is defined as the rate of change in velocity. Its SI unit (International System of Units) is meter/Second2.
Graphical Representation:
It is used to show the dependency of one physical quantity on another physical quantity.
Graphical Representation of motion:
It shows the dependency between distance, time, and velocity/speed. This chapter will discuss the Distance-time graph and Velocity-Time Graph.