Term
| Newton's 1st Law of Motion |
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Definition
| an object at rest will stay at rest, an object in motion will stay in motion until acted upon by an outside force |
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| Newton's 2nd Law of Motion |
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Definition
| an object will accelerate in the direction of an unbalanced force |
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| Newton's 3rd Law of Motion |
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Definition
| if one object exerts a force on another object, then the 2nd object exerts a force of equal strength in the opposite direction of the 1st |
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Definition
| the force that one surface exerts on another when the two rub against eachother |
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Definition
| the tendency of an object to resist any change in motion |
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Definition
| the product of an object's mass and velocity |
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Definition
| the force that pulls objects towards the earth |
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Definition
| a push or pull exerted on an object |
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Definition
| force exerted on an object that causes it to move (Nm or J) |
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Definition
| the number of times the force exerted on a machine is multiplied by the machine |
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Term
| Difference between actual and perfect mechanical advantage |
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Definition
| Actual takes in friction and perfect doesn't |
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Definition
| inclined plane, wedge, screw, lever, wheel and axel, pully |
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Definition
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Definition
| evergy that is stored and held in readiness |
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Definition
| the change of one form of energy to another |
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Term
| what does the law of conservation state? |
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Definition
| energy cannot be created or destroyed |
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Term
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Definition
| rate at which work is done |
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Term
| when using a lever sara only had to apply a force of 300 newtons to lifts a 90 kg. box. what is the mechanical advantage of her machine?? |
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Term
Alex was able to lift 30 kg 200cm
a. what force did he exert?
b. how much work did he do? |
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Definition
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