Chapter 6 Physics Vocabulary

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9 Terms

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motion diagram
a series of images showing the positions of a moving object taken at regular time intervals
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projectile
an object shot through the air, such as a football, that has independent vertical and horizontal motions and, after receiving an initial thrust, travels through the air only under the force of gravity
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trajectory
the path of a projectile through space
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average velocity
the change in position divided by the time during which the change occured; the slope of an object's position-time graph
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uniform circular motion
the movement of an object at a constant speed around a circle with a fixed radius
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centripetal acceleration
the center-seeking acceleration of an object moving in a circle at a constant speed
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centripetal force
the net force exerted toward the center of the circle that causes an object to have a centripetal acceleration
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resultant
a vector that results from the sum of two other vectors
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reference frame
a coordinate system from which motion is viewed