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Phy: Study of Motion

TermDefinition
mechanics study of motion of objects
kinematics science of describing the motion of objects using words, diagrams, numbers, graphs, and equations
scalars quantities that are fully described by a magnitude or a numerical value alone
vectors quantities that are fully described by both a magnitude and a direction
distance scalar quantity that refers to "how much ground an object has covered" during its motion.
displacement a vector quantity that refers to "how far out of place an object is": it is the object's overall change in position.
speed scalar quantity that refers to "how fast an object is moving."
velocity vector quantity that refers to "the rate at which an object changes its position."
instantaneous speed the speed at any given instant in time
average speed the average of all instantaneous speeds
acceleration a vector quantity that is defined as the rate at which an object changes its velocity
constant acceleration the velocity is changing by a constant amount each second.
Created by: weirba