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