1. Physics definitions

2. Motion
The change in position relative to a reference point.
The act of moving or movement

3. Point at which a position is determined
Frame of reference
Point at which a position is determined

4. The separation between an object and a reference point
Position
The separation between an object and a reference point

5. Displacement
The measurement of how far an object is from its original starting point.
VECTOR!

6. Magnitude and direction
Vector
Magnitude and direction

7. Scalar
Only magnitude

8. Magnitude
How big or how great something is

9. Distance How far something travels. Can be in any direction.
THIS IS SCALAR

10. Speed How fast something is moving.
The distance an object travels in a unit of time
SCALAR
Units of meters/second (m/s)

11. Speed

12. Instantaneous Speed The speed at any instant
Ex. Looking at your spedometer

13. Average speed
The total distance traveled divided by the time interval

14. Speed Example
What is the speed of a cheetah if it can travel a distance of 100m in 4 seconds?

15. Velocity Speed in a given direction.
How fast something is moving in a given direction
Change in the position divided by the time interval.
VECTOR
Units: M/s
Es. 68 m/s W

16. Occurs when either speed, direction, or both change.
Changing Velocity
Occurs when either speed, direction, or both change.

17. Constant Velocity
Require that both speed and direction must remain constant

18. Average Velocity
The change in position divided by the change in time with a direction

19. Example: Velocity
What is the velocity of a red car traveling south at a rate of 200 miles in 4 hours?

20. Acceleration
The rate at which velocity changes over a given amount of time.
Vector
m/s^2