PPT: Force and Laws of Motion | Science Class 9 PDF Download

 Page 1


FORCE
&
LAWS OF MOTION 
Page 2


FORCE
&
LAWS OF MOTION 
F O R C E F O R C E
It is a push or pull on an object that produces
acceleration in the body on which it acts. S.I.
unit of force is Newton.
A force can do three things on a body.
It can change the speed of a
body.
It can change the direction of
motion of a body.
It can change the shape and
size of a body.
In what way does the mass
of an object impact force?
Page 3


FORCE
&
LAWS OF MOTION 
F O R C E F O R C E
It is a push or pull on an object that produces
acceleration in the body on which it acts. S.I.
unit of force is Newton.
A force can do three things on a body.
It can change the speed of a
body.
It can change the direction of
motion of a body.
It can change the shape and
size of a body.
In what way does the mass
of an object impact force?
BALANCED FORCES
UNBALANCED FORCES
Forces are said to be balanced forces if they nullify one another and
their resultant force is zero.
When two opposite forces acting on a body, move a body in the
direction of the greater force or forces which brings motion in a body
are called as unbalanced forces.
Page 4


FORCE
&
LAWS OF MOTION 
F O R C E F O R C E
It is a push or pull on an object that produces
acceleration in the body on which it acts. S.I.
unit of force is Newton.
A force can do three things on a body.
It can change the speed of a
body.
It can change the direction of
motion of a body.
It can change the shape and
size of a body.
In what way does the mass
of an object impact force?
BALANCED FORCES
UNBALANCED FORCES
Forces are said to be balanced forces if they nullify one another and
their resultant force is zero.
When two opposite forces acting on a body, move a body in the
direction of the greater force or forces which brings motion in a body
are called as unbalanced forces.
ISAAC NEWTON? ISAAC NEWTON?
WHO WAS
A renowned physicist and mathematician from England who
discovered in 1687 the correlation between force and motion.
Today, his three laws of motion are instrumental in describing
the movement of any object in the universe.
Page 5


FORCE
&
LAWS OF MOTION 
F O R C E F O R C E
It is a push or pull on an object that produces
acceleration in the body on which it acts. S.I.
unit of force is Newton.
A force can do three things on a body.
It can change the speed of a
body.
It can change the direction of
motion of a body.
It can change the shape and
size of a body.
In what way does the mass
of an object impact force?
BALANCED FORCES
UNBALANCED FORCES
Forces are said to be balanced forces if they nullify one another and
their resultant force is zero.
When two opposite forces acting on a body, move a body in the
direction of the greater force or forces which brings motion in a body
are called as unbalanced forces.
ISAAC NEWTON? ISAAC NEWTON?
WHO WAS
A renowned physicist and mathematician from England who
discovered in 1687 the correlation between force and motion.
Today, his three laws of motion are instrumental in describing
the movement of any object in the universe.
FIRST LAW OF MOTION
N E W T O N ' S
Any object remains in the state of rest or uniform motion along a
straight line until it is compelled to change the state by applying an
external force.