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Laws of Motion and Energy Notes Sir Isaac Newton 1. Described 3 laws that relate forces to motion 2. _____________-a push or a pull, all forces have size and direction Vocabulary 1. _____________- a force that opposes motion between 2 objects that are touching 2. Inertia-tendency of all objects to stay at _________ or in _________ 3. _____________- the amount of matter an object is made of Newtown’s 1st Law of Motion “Law of Inertia” An object at _____________remains at ___________ and an object in _____________ remains in _____________ at constant speed and in a straight line unless acted on by an unbalanced force Examples of Newton’s 1st Law of Motion 1. Car suddenly ___________ and you strain against the __________ 2. Car turns ___________ and you appear to slide to the ________ 3. The difficulty of pushing a car that won’t __________ Newton’s Second Law of Motion The _______________ of an object depends on the _______ of the object and the amount of the ___________ applied 1. Force = mass x acceleration F=m x a 2. Force- a ____________ or ___________, all forces have size and direction 3. _____________- the amount of _____________ an object is made of 4. ____________________-the rate at which velocity changes; and object accelerates if it speed changes, if it’s direction changes and if both speed and direction changes Examples of Newton’s 2nd Law 1. Hitting a softball, the harder the hit, the faster the ball goes 2. Football players and their positions 3. Loaded versus an unloaded truck Newton’s Third Law of Motion 1. For every ____________, there is an ___________and opposite ___________ 2. Action and Reaction Examples of Newton’s 3rd Law 1. 2 cars hit head on 2. Jumping out of a boat onto a dock 3. Astronauts in space