1. 8.1 Motion “reference frame” – more commonly called “ frame of reference” Motion is related to some stationary (unmoving) object, called the frame of reference. http://www.phy.ntnu.edu.tw/java/relativeVelo city/relativeVelocity.html

2. Change in Position When we describe “motion”, we relate it in terms of some frame of reference that is not moving – Ex. She drove 3 miles away from my house. Move the pencil (from where it is now) 4 centimeters to the left.

3. Motion or Movement is a Change In Position Called Displacement 10 ft. Position A Position B

4. Speed is the Rate of Displacement 10 ft. Position A Position B 10 0 Seconds

5. Speed Equations A simple and useful version of the Speed Equation Looks Like This

6. If You Want to Know the Distance Traveled You Can Rewrite the Equation Like This

7. “Speedometer”

8. Travel at a constant speed

9. Changing speeds

10. Position-Time Graphs Distance in Feet Time in Seconds 0 1 2 3 4 5 6 7 8 9 40 120 160 200 80 Describes the Rate of Change in Position of an Object Over Time Distance (ft) Vs. Time (sec.) DistanceTime 60 80 100 120 140 160 180 20 2 3 4 5 6 7 8 9 1 40

11. Velocity is the Rate of Displacement in a Specified Direction 10 ft. Position A Position B 10 0 Seconds East South West North

12. Momentum Product of an object’s mass and its velocity.