Sir Isaac Newton Laws of Motion Sir Isaac
- Slides: 14
Sir Isaac Newton Laws of Motion
Sir Isaac Newton l 1. Described 3 laws that relate forces to motion l 2. Force-a push or a pull
Vocabulary l 1. Friction - a force that opposes motion between 2 objects that are touching l 2. Inertia - tendency of all objects to stay at rest or in motion l 3. Mass - the amount of matter an object is made of
Newtown’s 1 st Law of Motion “Law of Inertia” l An object at rest remains at rest and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force
Examples of Newton’s 1 st Law of Motion l l l 1. Car suddenly stops and you strain against the seat belt 2. Car turns left and you appear to slide to the right 3. The difficulty of pushing a car that won’t start
Examples of Newton’s 1 st Law of Motion
Examples of Newton’s 1 st Law of Motion
Newton’s Second Law of Motion l The acceleration of an object depends on the mass of the object and the amount of the force applied
Newton’s Second Law of Motion l 1. Force = mass x acceleration F=m x a l 2. Force- a push or pull 3. Mass- the amount of matter an object is made of 4. Acceleration-the rate at which velocity changes l l
Examples of Newton’s 2 nd Law l 1. Hitting a softball, the harder the hit, the faster the ball goes l 2. Football players and their positions (why don’t we have tiny linemen) l 3. Loaded versus an unloaded truck trying to brake while going downhill
Examples of Newton’s 2 nd Law
Examples of Newton’s 2 nd Law
Newton’s Third Law of Motion l 1. For every force, there is an equal and opposite force l 2. Action and Reaction
Examples of Newton’s 3 rd Law l 1. 2 cars hit head on l 2. Jumping out of a boat onto a dock l 3. Astronauts in space
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