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clay dukewich

unit 2

QuestionAnswer
motion a change in an objects position relative to a refernce point
distance distance the length the object travels measured in SI units
displacement distance and direction of an objects change in position from the starting point
speed distance an object travels per unit of time
velocity the speed and direction of a moving object
reference point an indicator that orients you generally
vector quantity has both magnitude and direction
scalar expressed as the product of a numerical value and a physical unit, not merely a number
quantity A considerable amount or number
constant speed movement at a fixed distance per unit of time
average speed total distance an object travels divided by the total time it takes to travel that distance
instantaneous speed speed of an object at a given point in time, is constant for an object moving with constant speed and changes with time for an object that is slowing down or speeding up
acceleration rate of change of velocity can be calculated by dividing the change in the velocity by the time it takes the change to occur
deceleration decrease in rate or speed
Created by: clayduke
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