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Physics Vocab
ch. 3 and 6
11
Physics
12th Grade
09/12/2007

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Cards

Term
velocity-time graph
Definition
plots velocity versus time to determine the sign of object's acceleration
Term
acceleration
Definition
rate velocity of an object changes
Term
average acceleration
Definition
change in object's velocity during time interval, divided by the time interval
Term
instantaneous acceleration
Definition
change in object's velocity at a specific instant in time
Term
free fall
Definition
motion of body when air resistance is negligible and motion can be considered due to gravity alone
Term
acceleration due to gravity
Definition
acceleration of object in free fall, resulting from influence of Earth's gravity
Term
projectile
Definition
object shot thru air with indep. vertical and horizontal motions; after initial thrust, travels thru air only under the force of gravity
Term
trajectory
Definition
path of projectile thru space
Term
uniform circular motion
Definition
movement at constant speed around circle with fixed radius
Term
centripetal acceleration
Definition
center-seeking acceleration of object moving in a circle at a constant spped
Term
centripetal force
Definition
net force exerted toward center of circle causing object to have centripetal acceleration
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