Unit 1: SPEED AND VELOCITY
Speed (equation)
Speed = distance/time
Velocity (equation)
Velocity = change in distance/time
Reference Frame
a position from which an event is observed
Vector
a quantity that has both magnitude and direction
Scalar
a quantity that is described by magnitude alone
Motion Map
an image that represents the position, velocity, and acceleration of an object at one-second intervals
Average Velocity (equation)
average Velocity = change in distance/change in time = (final distance-initial distance)/(final time-initial time)
Positive Slope
indicates an object is moving away from the origin
Horizontal Slope
indicates an object is not moving
Negative Slope
indicates and object is moving toward the origin
Slope (definition)
measurement of the steepness of a line
Slope (position vs. time graph)
represents an object's velocity; changes when velocity changes (steeper the slope, the greater the velocity)
Slope (equation)
slope (m) = change in y-axis/change in x-axis = (Y2-Y1)/(X2-X1)
Velocity (definition)
the displacement of an object during a specific unit of time; a vector; speed with direction
Speed (definition)
the distance traveled during a specific unit of time
Average Velocity (definition)
the overall displacement of time