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12 Cards in this Set
- Front
- Back
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Density equation |
D = M/V |
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How would you measure an irregularly shaped object? |
You would put it in a water container, with a downwards facing spout just above water level. You would then put it in and measure the amount of water displaced |
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Units of force (hint: measuring gravity) |
Newtons (N) |
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What is weight? |
The effect of gravity on mass. |
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What is mass? |
How much actual stuff is there, measured in grams. |
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What does hooke's law state? |
It states that extension: how stretchy it is is directly proportional to the force applied. |
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Limits of hooke's law? |
When an object gets 'out-stretched' it doesn't work anymore. |
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Friction: uses and disadvantages. |
You can't go as fast as possible, and will damage stuff. But it saves lives through parachutes (air resistance), and helps us brake and slow down. |
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Levers |
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How would you reduce friction? |
Via a lubricant |
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Turning moments |
Force (N) x Distance (M) = turning moment (nm) |
