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13 Cards in this Set
- Front
- Back
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According to Aristotle what must you do for an object to keep moving |
Continue to apply force to keep object in motion |
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What did Galileo think would happen in an ideal world if you rolled a ball |
It would stay the same speed |
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What would actually happen in the real world if you rolled a ball? Why? |
Slow it down due to friction |
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What is newtons first law |
An object in rest will stay in rest and an object in motion will stay in motion unless acted on by an outside unbalanced force |
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Law of intertidal |
Law of intertia |
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What is inertia |
The tendency to remain at motion or remain at rest unless acted on by an outside force |
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What is Newton’s second law? |
The change in velocity of an object is directly proportional to the force applied and inversely proportional to the mass |
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If I tripled the force on an object, what would happen to the acceleration? |
It would triple |
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If I doubled the mass on an object, what would happen to the acceleration? |
It would decrease by a factor of two |
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What is Newton’s third law? |
For every action, there is an equal and opposite reaction |
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List all the ways we can prevent injury or car accidents |
Accident prevention training / technology Vehicle safety devices |
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List three cushioning devices used in vehicles and explain how they work |
Seatbelt, air bag, crumple zones |
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What two things does braking distance depend on? |
Surface and velocity |
