2. CONCEPT :-
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 )
3. 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
4. VECTOR AND SCALAR
Scalar :
• Gives only magnitude
Vector :
• Give both magnitude and direction
e.g.
Scalar
Vector
5. 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.
UniformNon Uniform
6. SPEED
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
7. 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
8. VELOCITY
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.
9. UNIFORM VELOCITY
10. AVERAGE VELOCITY
11. Acceleration
•The rate of change of
velocity of an moving
object is known as its
Acceleration.
•It is a vector quantity.
•Acceleration =
Velocity/Time
•It’s unit is m/sec2.
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