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Definition
| The tendency of an object to remain at rest or in motion |
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| Objects at rest tend to stay at rest. Objects in motion tend to stay in motion. |
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| What happens when a car stops suddenly? |
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Definition
| inertia will cause an unrestrained person to travel forward at the car's original speed |
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| Newton's Second Law of Motion |
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Definition
| An object that is at rest or in motion will not change its condition unless something causes the change. Object will speed up, slow down change direction, etc, only when some force acts on it |
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| a unit used to measure force |
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| mathematical formula that shows how force causes change in speed or direction of an object |
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| A force that occurs between surfaces that are in contact with each other. Friction resists the motion of one surface over another. |
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Definition
| the rate of change in velocity |
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| describes the speed and direction of an object |
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| the amount of matter in an object |
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| the rate of change in position or rate of motion |
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Definition
| property of a body that resists any change in velocity |
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| mass of an object multiplied by its velocity |
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| upward force of air against a moving object |
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Definition
| forces always come in pairs |
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Definition
| two objectw with the same velocity must be moving in the same "direction" |
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Definition
| a force that acts on all objects on earth |
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Term
| Newton;s thrid law of motion |
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Definition
| For every action or force there is an equal or oppisite action or force |
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Definition
Objects that roll produce _________friction than objects that slide
more or less friction? |
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Term
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Definition
| The amount of friction depends on the ____________ of the surfaces |
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Definition
rough surfaces have __________ friction
more or less ? |
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Definition
| smooth surfaces have ___________ friction |
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what force is needed to achieve 5 m/s acceleration of an object with a mass of 2 kg?
a. 5N b. 2N c. 10N |
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| What is the mass of an object with a force of 15N an acceleration of 5 m/s2? |
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Definition
| Which law helps us to find the mass of an object |
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Term
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Definition
True or False
If a large force is required to overcome the inertia of a body and get that body moving, the body has a lot of mass. |
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