Term
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Definition
| an objects change in position realtive to a reference point |
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Definition
| The distance traveled divided by the time taken for motion to occur |
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Definition
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Definition
| speed of an object in a particular direction |
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Definition
| rate at which velocity changes over time |
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Term
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Definition
Final velocity - initial velocity
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Time Taken |
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Term
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Definition
meters per second per second
m/s/s |
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Term
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Definition
| a push or pull exerted on an objet in order to change the motion of the object; has size and direction |
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Term
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Definition
| the SI unit for force. Symbol=N |
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Term
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Definition
| the combination of all forces acting on an object |
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Term
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Definition
net force = 0 newtons
does not cause change in motion of object
ex. house of cards
light hanging from ceiling |
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Term
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Definition
net force NOT = to 0 newtons
causes a change in motion, speed &/or direction of object
ex. kicking a ball |
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Term
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Definition
| a force that opposes motion between 2 surfaces that are in contact |
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Term
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Definition
| friction between moving surfaces |
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Term
| 2 FACTORS THAT AFFECT FRICTION |
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Definition
1. amount of force applied
2. roughness of surfaces in contact |
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Term
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Definition
kinetic friction where the 2 surfaces slide past eachother
ex. pushing a box across the floor |
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Term
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Definition
one surface rolling over the other usually via wheels.
ex. bicycle
any mode of transportation w/
wheels |
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Term
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Definition
when a force is applied to an object but the object DOES NOT move.
*this disappears as soon as the object begins to move* |
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Term
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Definition
| substances applied to surfaces to reduce friction between the 1 surfaces |
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Term
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Definition
| force of attraction between objects that is due to their masses |
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Term
| LAW OF UNIVERSAL GRAVITATION |
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Definition
*describes the relationship between gravitational force, mass and distance
*Isaac Newton
*force increases as mass increases
*force decreases as distance increases |
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Term
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Definition
| measure of the gravitational force exerted on an object; value can change depending on location of the object in the universe |
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