Some objects in our surrounding are moving with respect to the stationary ones. Based on that object or body in our
surroundings, our environment can be classified as :-
• Stationary Objects ( in rest )
• Moving Objects ( in motion )
A body is said to be in motion when it’s position
changes continuously with respect to reference
point (stationary object).
• E.g.:- hand of the clock are in motion.
Reference point :-
• When a car moves in front of a forest
• With respect to the trees car is moving.
• Trees – reference point
VECTOR AND SCALAR
• Gives only magnitude
• Give both magnitude and direction
UNIFORM AND NON UNIFORM MOTION
A body travels in uniform motion when it travels equal distance in equal interval of time.
A body travels in Non uniform motion when it travels unequal distance in equal interval of time.
Speed:- distance travelled by a body per unit time ……….
speed = distance/time
Speed is scalar
Speedometer and Odometer are used to measure speed of an object
AVERAGE AND UNIFORM SPEED
Average speed :- The average speed of a body is the total distance travelled by the total time taken.
Average Speed = Total distance traveled / Total time taken
Velocity :- distance travelled by a body per unit time in a given direction……
VELOCITY = displacement / time
Velocity is vector.
Direction of a body is as displacement at the body.