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19 Cards in this Set
- Front
- Back
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frame of reference
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the back round object used for comparison
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motion
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a change in position
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speed
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the rate at which an object moves(distance/time)
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average speed
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total distance traveled/total time
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instantaneous speed
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the rate of an object moving at a given moment
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velocity
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speed and direction of an object
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slope
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rise/run
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force
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push or pull
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net force
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combination of all forces on object
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unbalanced force
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net force of an object causing it to stop moving,start moving, or change direction
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balanced force
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equal forces acting in opposite direction
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friction
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force of 2 objects rubbing against each other
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gravity
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a force that pulls objects towards each other
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isaac newton
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realized that gravity is everywhere in the universe(not just earth)
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free fall
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when the only force acting upon an object is gravity(9.8m/s2)
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air resistance
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type of fluid friction,upward force acted upon a falling abject
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terminal velocity
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the greatest velocity a falling abject reaches
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inertia
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the tendency of an object to resit change in motion
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momentum
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a characteristic of a moving object that is related to the mass and velocity of an object
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