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Chapter 3 Motion
| Question | Answer |
|---|---|
| Sir isaac Newton was born in in and spent most of his time working on his . | England 1642 inventions |
| list three examples of his inventions | water clock sundial kites |
| He graduated from in 1665 | Cambridge University |
| true or false, His teachers were amazed by him | false |
| What terrible epidemic swept thought Cambridge in 1665 and how did it affect Newton? | Plague, he had to move to his mothers farm which is were he made most of his inventions |
| Newton Had a very important discovery during this time. It had to do with hypotheses about the nature of . | Motion |
| What did scientists believe up until this time about motion | that a constant force was needed to keep and object in motion |
| It seemed obvious that if a stopped acting on an object, that object down and eventually . | force, slowed, stopped |
| what struck him on the head while he was sitting under a tree? | an apple |
| He wondered about the motion of this object and what might have caused it to move. He began to wonder about what caused the of earth, the Moon, and the in the sky. | movement, stars |
| What is the first law of motion? | an object at rest tend to stay at rest and an objet in motion tend to stay in motion |
| the tendency of an object to remain at rest or in motion is called | inertia |
| List three examples of inertia in everyday life | driving then slamming the brakes,a ball, and a rock |
| How can an auto mobile provide a frightening lesson in inertia | a person can get hurt if your car is stopped quickly, you will keep going |
| List three things that engineers have developed in auto mobiles that help prevent the terrible effect of inertia | air bags, seat belts,and head restraints |
| the more mass an object has the more it has | inertia |
| Inertia is a measure of how much it takes to move something | force |
| what three important discoveries did newton make | he relationship between light and color, how the universe is held together, calculus |
| his first law of motion states that all bodies have . | inertia |
| what is Newtons Second law | an object that is at rest or in motion will not change it condition unless something causes the change |
| what is the definition of force | a push or pull |
| what formula is used to calculate force | f=m*a |
| What is the definition of newtons in words? What is the formula? | the force needed to accelerate a 1kg object by 1 meter per second every second, it is used with the pull of gravity, N=kg*m/s squared |
| what is friction | is a force that occurs between surfaces that are in contact with each other |
| Friction the motion of one surface over another | resists |
| are liquids or fine powder used to reduce the friction between two surfaces | Lubricants |
| when machinery rubs together, friction produces which can damage the machinery | heat |
| how can this damage be avoided | oil |
| why would walking not be able without friction | your feet would slide |
| athletic shoes may have , ,or on their shoes to increase friction and prevent sliding | studs, spikes of cleats |
| how could you also decrease the friction between your hands and a piece of equipment | water,lotion,oil,butter,grease |
| and auto mobile feature that works by increasing friction is its . | brakes |
| a newton is used to measure | force |
| increase, decrease | increase-gravel,cleats,sandpaper,carpet decrease-fine powder, oil, butter,wax,ball bearing |
Created by:
khart18
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