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22 Cards in this Set
- Front
- Back
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Distance |
Distance= Ave. Velocity * time |
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velocity |
velocity=gravity* time |
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Average velocity |
(v)=1/2 (gravity*time) |
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Speed vs Time Graph |
Straight line= linear linear indicates speed change is constant Slope= acceleration |
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Distance vs Time Graph |
Graph for an object in free fall Shape is parabolic increasing slope= increasing speed |
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Acceleration |
Rate of change in velocity Speeding up Slowing down or turning Change in velocity/time interval |
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Accel and net force |
Acceleration is proportional to net force |
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Accel and Mass |
Acceleration is inversely proportional to mass Acceleration proportional 1/mass |
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mass and inertia |
More mass = more inertia |
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Inertia |
resistance to acceleration |
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Newton's Second Law |
The force exerted by an object is equal to its mass multiplied by its acceleration F=ma |
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Friction |
Force opposes motion Also occurs in Fluids-Liquids and gasses |
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Air resistance |
Friction of the air (fluid) acting on an object Noticed at high speeds Can result in wind burn |
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Weight vs Mass |
Mass is the amount of matter in an object, also the measure of the inertia in that object Weight is the force upon an object due to gravity |
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Calculate Weight |
F=mg |
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Free Fall |
F/m= acceleration F/m is a proportion |
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Terminal Velocity |
Terminal= Final Air resistance pushes up on a falling object Higher speed= more resistance When an object falls fast enough Fgrav stops accelerating Doesn't stop falling The more massive the object the longer it takes to reach TV |
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Terminal Velocity with Air resistance |
Feather reaches terminal velocity within the first few inches of fall The elephants accelerate all the way down |
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Force |
Push or pull Measured in Newtons Mutual action between forces |
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Newtons Third Law of Motion |
For every action there is an equal and opposite reaction |
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Momentum |
Tendency of an object to continue doing what its doing Momentum= mass*velocity p=mv |
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Weight |
Measures in newtons |
