The size of a given quantity:

(a)  

When the object or objects in a motion diagram are replaced with single points:

(a)  

The entire length of an object's path, even if the object moves in many directions:

(a)  

A comparison between an unknown quantity and a standard:

(a)  

A series of images showing the positions of a moving object at equal time intervals:

(a)  

A quantity that is just a number without any direction:

(a)  

The speed and the direction of an object at a particular instant:

(a)  

The difference between two times:

(a)  

A quantity that has both magnitude and direction:

(a)  

How well the results of a measurement agree with the "real" value:

(a)  

The distance and direction from the origin to the object:

(a)  

The degree of exactness of a measurement:

(a)  

A change in position, involving both magnitude and direction:

(a)  

A vector that represents the sum of two other vectors:

(a)  

Valid digits in a measurement:

(a)  

Method of treating units as algebraic quantities that can be canceled:

(a)  

The ratio of an object's change in position to the time interval during which the change occurred:

(a)  

The position of an object at a particular instant in time:

(a)  

The point at which all variables in a coordinate system have the value zero:

(a)  

Graphical representation of time data plotted on the horizontal axis and position data plotted on the vertical axis:

(a)