Motion:- We called an object to be in motion when its position changes with time.
Example:- Moving vehicles, flying Birds, Riding Bicycles Etc.
Rest:- Any motionless object is said to be at rest.
-:Types of Motion:-
1) Motion in a straight line is called rectilinear motion.
Example:- Book on the table.
Example:- Moving car in a straight path.
2) In circular motion an object moves such that its distance from a fixed point remains the same.
Example:- The motion of a point marked on the blade of an electric fan or the hands of a clock are examples of circular motion
3) Motion that repeats itself after some period of time is called periodic motion.
Example:- A branch of a tree moving to and fro, motion of a child on a swing
Speed = Total distance covered
Total time taken
(Unit of speed is m/s )
In everyday life we seldom find objects moving with a constant speed over long distances or for long durations of time. If the speed of an object moving along a straight line keeps changing, its motion is said to be non-uniform. On the other hand, an object moving along a straight line with a constant speed is said to be in uniform motion. In this case, the average speed is the same as the actual speed.
Example:- Moving vehicles, flying Birds, Riding Bicycles Etc.
Rest:- Any motionless object is said to be at rest.
-:Types of Motion:-
1) Motion in a straight line is called rectilinear motion.
Example:- Book on the table.
Example:- Moving car in a straight path.
2) In circular motion an object moves such that its distance from a fixed point remains the same.
Example:- The motion of a point marked on the blade of an electric fan or the hands of a clock are examples of circular motion
3) Motion that repeats itself after some period of time is called periodic motion.
Example:- A branch of a tree moving to and fro, motion of a child on a swing
Speed:-
We call the distance covered by an object in a unit time as the speed of the object.
So, for us the speed is the total distance covered divided by the total time taken.
Thus,Speed = Total distance covered
Total time taken
(Unit of speed is m/s )
In everyday life we seldom find objects moving with a constant speed over long distances or for long durations of time. If the speed of an object moving along a straight line keeps changing, its motion is said to be non-uniform. On the other hand, an object moving along a straight line with a constant speed is said to be in uniform motion. In this case, the average speed is the same as the actual speed.
