1. Newton’s Laws of Motion
Inertia, Calculating Acceleration, and Action/Reaction Pairs

2. Objectives: Learn new vocabulary to describe the motion of objects
Learn Newton’s three laws of motion
Use Newton’s law to describe motion of objects

3. Vocabulary Review: Quiz otw
Motion – a change in the position of an object
Distance – how far an object travels as it moves from one location to another
Displacement – how far an object is from some earlier position, regardless of the path it took
Force – a push or a pull between two objects

4. New Vocabulary: Quiz otw
Inertia – the tendency objects have to maintain their state of motion
Gravity – the force between two objects with mass
Friction – the pulling force that works against an object’s motion to slow it or prevent it from moving
Normal force – pushing interaction between two objects touching, always acts perpendicular to supporting surface

5. The difference between mass and weight
Weight is a force – your weight is the force you are applying to the surface of the earth
Mass is how much matter is in an object – the more mass an object has, the more its gravitational force
Acceleration due to gravity – on Earth is 9.8 m/s2

6. Newton’s First Law
An object in motion, will stay in motion, and an object at rest will stay at rest, unless acted on by an unbalanced force

7. Newton’s Second Law
The amount of acceleration depends on the mass of the object and the net force acting on the object F = ma

8. Newton’s Second Law F = ma
If no net force acts on an object, it will not accelerate. If a net force acts on an object, it will accelerate
The direction of the acceleration will always be in the direction of the net force
…………………..

9. Newton’s Third Law
For every action, there is an equal and opposite reaction