Physics Vocab Ch 2

2. ...diagram. Series of images showing the positions of a moving object taken at regular time intervals.
4. ...model. A simplified version of a motion diagram in which the moving object is replaced by a series of single points.
10. Instantaneous... A measure of motion that tells the speed and direction of an object at a specific instant in time.
11. A measure of size.
13. A scalar quantity that describes how far an object is from the origin.
14. Quantities, such as temperature or distance, that are just numbers without any direction.
15. ...interval. The difference between two times.
16. A vector that results from the sum of two other vectors.

1. The point at which both variables in a coordinate system have the value zero.
3. A change in position having both magnitude and direction.
4. The separation between an object and the origin.
5. ...position. The position of an object at any particular instant in time.
6. ...system. Used to describe motion that gives the zero point location of the variable being studied and the direction in which the values of the variable increase.
7. Quantities, such as position, that have both magnitude and direction.
8. Average... How fast an object is moving.
9. ...velocity. The change in position, divided by the time during which the change occurred.
12. Position-time... Can be used to determine an object's velocity and position.