Kinematics

PHYSICS CLASS 9TH
KINEMATTICS

In the branch of the physics mechanics is deal with the motion of the
objects, generally mechanics is divided into the two branches
➢ Mechanics
• Kinematics
• Dynamics
Kinematics
It is the branch of the physics that deal with the motion of the object
without any consider the force that is cause of motion.
• Distance
• Displacement
• Speed
• Velocity
• Time
• Acceleration
Dynamics
Dynamics is the branch of the physics that deal with motion of the object
and the force that produce change motion.
Example: -
like a football is place on the grass and no moving, when hit the ball the
force is change into the motion.
As we know, physical quantity is divided into scalar and vector quantity.
• Scalar Quantity
• Vector Quantity

, Scalar Quantity
A scalar quantity is a physical quantity which can be defined just only
magnitude.
Example
Speed, Time and Length are the scalar quantity which having the
magnitude.
Vector Quantities
A vector quantity is a physical quantity which can be defined as
magnitude as well as Direction, its show by arrow.
Example
Displacement, Velocity and Acceleration


Now we discuss about the Rest and Motion of the object which is
looking in our daily life.
Rest
It can define as a body which cannot be change its position with
respect to its surrounding are called the rest.
Example
A book is laying on the table is rest.
Motion
An is said to be motion in which the body is continuously is change the
position with the surrounding are called motion.
Example
A car is moving on the road, a man is walk on road.