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Physics 6.1- 6.2

Speed, Velocity, and Acceleration

TermDefinition
Kinematics Study of motion without regard to force
Translational motion any change in position
Rectilinear motion Movement in a straight line
Curvilinear motion Movement in a curved line
Vector amount and direction (like velocity)
Scalar magnitude but no direction (like speed)
Constant velocity implies rectilinear motion with no change
Variable velocity experiences starts, stops, and maneuvers
Average speed total distance traveled divided by time
Displacement straight line between 2 points (from point a to point b)
Average velocity displacement divided by time
Sign convention way of showing positive and negative direction dependent on a point of reference
Instantaneous velocity velocity at a given moment in time
What is velocity equal to a graph? the slope
What is the difference between speed and velocity? Speed is distance over time, velocity is speed with direction
Acceleration any change in velocity per unit of time
Average acceleration Change in velocity divided by time
Variably accelerated Increase in velocity is not uniform
Constant acceleration Acceleration is constant
Instantaneous acceleration slope of tangent to curve of graph of velocity divided by time
Deceleration slowing to a stop regardless of the initial direction
Created by: 1763
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