Newtons laws of motion power point presentation

1. NEWTON’S FIRST
LAWS OF MOTION
By: Miss Z.G SEKGOBELA

2. BACKGROUND
Isaac Newton (1643-1727) was an English
scientist and mathematician famous for his
discovery of the law of gravity also
discovered the three laws of motion.
However today these laws are known as
Newton’s Laws of Motion and describe the
motion of all objects on the scale we
experience in our everyday lives.

3. WHAT DO YOU
THINK CAUSES
OBJECTS MOVE?
 THINK ABOUT THIS FOR A MINUTE.
 HOWEVER THIS INTRODUCES US TO THE CONCEPT
OF TODAYS LESSON WHICH IS BASED ON NEWTON
FIRST LAWS OF MOTION.

4. NEWTON’S
FIRST LAW
Also known as
the law of
inertia.
States that an
object will
continue in a
state of rest or
uniform
velocity

6. TEST YOURSELF!!!
Give examples of objects that cannot
move unless you touch them or help
them move.

7. EXPECTED ANSWERS FROM
LEARNERS

8. Newton's 1st Law and You.
PLEASE, Don’t let this be you. Wear seat belts.
Because of inertia, objects (including you) resist
changes in their motion. When the car is moving at 80
km/hour is stopped by the brick wall, your body keeps
moving at 80 m/hour.

9. HENCE DO THE RIGHT THING AND
WEAR YOUR SEAT BELT

10. WHAT DO YOU THINK
CAUSES OBJECTS IN
MOTION TO SLOW DOWN
AND BECOME
MOTIONLESS.
THINK ABOUT THIS FOR A MINUTE!!!

11. It’s a force we sometimes cannot see
which is friction

12. FRICTION
 Objects on earth, unlike the frictionless space the
moon travels through, are under the influence of
friction.
 However there are four main types of friction:
1. Sliding friction: ice skating
2. Rolling friction: bowling
3. Fluid friction (air or liquid): air or water resistance
4. Static friction: initial friction when moving an
object

13. NEWTON’S
SECOND
LAW
States that the
net force of an
object is equal
to the product
of its mass
and
acceleration,
or F=ma.

14. ANOTHER DEFINATION IS THAT:
The acceleration of an object as produced by a net force is directly
proportional to the magnitude of the net force, in the same direction
as the net force, and inversely proportional to the mass of the
object.

17. NEWTON’S
THIRD LAW
Also known as
action
reaction.
States that For
every action,
there is an
equal and
opposite
reaction.

18. According to
Newton’s third law,
whenever objects A
and B interact with
each other, they
exert forces upon
each other. When
you sit in your chair,
your body exerts a
downward force on
the chair and the
chair exerts an
upward force on
your body

19. TEST YOURSELF!!!
Come up with examples which uses
Newton’s third law of motion.

20. EXPECTED ANSWERS
FROM LEARNER’S.

21. THANK YOU
BY MISS Z.G SEKGOBELA

22. REFERENCE LIST
 Jnana Prabodhini Educational Resource Center. (2013) Newtons law of motion. Available from
Slideshare at https://www.slideshare.net/ERCJPP/newtons-law-of-motion-23899445 (Accessed 03
September 2018)
 Adabra66. (2013) Newton's Law Of Motion. Available from Slideshare at
https://www.slideshare.net/adabra66/newtons-law-of-motion-23151913/5 ( Accessed 03 September
2018)
 Ancy, S. (2014) Newton's Second Law Of Motion. Available from Slideshare at
https://www.slideshare.net/ancysimon/newton-second-law-of-motion (Accessed 03 September 2018).
 Chaurasia, M. (2018) newton's law of motion. Available from Slideshare at
https://www.slideshare.net/monicachaurasia/newtons-law-of-motion-90676489 ( Accessed 03
September 2018).