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29 Cards in this Set
- Front
- Back
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Velocity |
SPEED OF AN OBJECT AND THE DIRECTION OF ITS MOTION |
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REFERENCE POINT |
MOTION OCCURS WHEN AN OBJECT CHANGES IT POSITION RELATIVE TO A REFERENCE POINT |
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DISPLACEMENT |
INCLUDES DISTANCE OF AN OBJECT BUT ALSO DIRECTION |
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Negative Acceleration |
slowing down |
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Positive Acceleration |
Speeding up |
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Speed |
Distance an object travels |
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Velocity^ |
Distance an object is going plus direction ; cannot be a constant on a circular track |
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Y Axis |
Distance |
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X Axis |
Time |
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Inertia |
tendency of an object to resist change in motion |
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Acceleration |
Rate of change of velocity of an object |
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Net Force |
2 or more forces combined that are acting on an object |
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Instantaneous speed |
the speed at a given point in time |
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SPEED GRAPH |
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Friction |
force that opposes the sliding motion of 2 surfaces that are touching each other |
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Terminal Velocity |
force of air resistance pushing up on an object is equal to the force of gravity pulling down on the object |
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momentum |
how much force is needed to change motion of an object |
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Microwelds |
little forces called that causes friction |
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2 important things when discussing air resistance |
Mass & Force |
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ACCELERATION GRAPH |
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gravity depends on 2 things |
masses of 2 objects & distances b/w them |
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Centripetal Acceleration |
Acceleration toward the center of a curved or circular path |
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Difference between weight & mass |
Weight is a force Mass is a measure of the amount of matter an object contains |
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Newtons 1st law |
object at rest until a force acts on it |
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Newton's 2nd law |
acceleration of an object is directly related to its mass & the force applied |
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Newtons 3rd law |
every action force ,there is an equal and opposite reaction force |
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Rolling Friction |
between a rolling object and the surface it is rolling on |
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Sliding Friction |
the friction of a sliding object |
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Static Friction |
force you must overcome to move |
