1. Newton’s Laws of Motion
Terms & Laws

2. FORCE
Mutual interaction between 2 objects resulting in pushes or pulls.
Has direction
Measured in Newtons (N)
Examples:
a ball being kicked.
Pushing a chair back
Air particles causing a parachute to slow down.

3. Unbalanced Forces When the forces on an object are not balanced.
One force is stronger than another.
Acceleration, a change in motion, occurs.

4. Balanced forces When the forces on an object are equal.
No acceleration (change in motion) occurs.

5. Newton’s First Law of Motion
Objects in motion stay in motion, objects at rest stay at rest unless acted on by a unbalanced forces.
Also known as inertia.
Astronaut video.

6. Normal force When 2 surfaces are pushing on each other.
Often balances gravity
Only used when looking at the forces on a single object.

7. Friction Does it speed you up or slow you down?
Works in the opposite direction of the motion.

8. Conclusion from rubber band wars
Force on me equals force on you.
Forces act in opposite directions.

9. NEWTON’S THIRD LAW of MOTION
For every action there is an equal an opposite reaction
Must include 2 “objects”
Refers to the force each is exerting on each other.

10. Mass
Anything made of particles of matter.

11. Newton’s Second Law a=F
The acceleration of an object occurs in the direction of the force and is inversely proportional to the mass.
Typically you see this expressed as F=ma

12. Force & acceleration
Acceleration is directly related to force (what force does, acceleration does)
If force increases, acceleration increases

13. Mass & acceleration
Mass has an inverse relationship to acceleration (acceleration does the opposite of mass)
If mass gets bigger, acceleration is smaller.

14. A WEBQUEST . . .