Chapter 1 Vocabulary

Front

acceleration

Back

A change in the velocity (speed, direction, or both) of a body.

Front

reference point

Back

A place or object used for comparison to determine if an object is in motion

Front

speed

Back

The distance an object travels per unit of time

Front

velosity

Back

Speed in a given direction

Front

motion

Back

The state in which one object's distance from another is changing.

Front

International System of Units

Back

A system of measurement based on multiples of ten and on established measures of mass, length, and time.

Front

distance

Back

The length of the path between two points.

Front

average speed

Back

The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.

Front

instantaneous speed

Back

The speed of an object at one instant of time.

Front

slope

Back

The steepness of a line on a graph; the ratio of the vertical change(the rise) to the horizontal change(the run).