1. Representing Motion

2. Motion Diagrams
Motion Diagrams: A series of images showing the position of a moving object at equal time intervals.

4. The Particle Model
A simplified version of a motion diagram where the movement of the object is replaced by a series of dots.

5. Coordinate Systems Coordinate System: A system of making measurements.
Origin: Where the y-axis and x-axis equals zero.
Position: How far an object is from the defined origin. Can be neg.

6. Vectors and Scalars
Vectors: Quantities that have both a magnitude and direction. They are represented with an arrow whose magnitude is represented by the length and direction is represented by the direction the arrow is pointing.
ex: velocity and force
Scalar: Quantities that have only a magnitude. ex: speed, mass, time

7. Adding Vectors The Tip to Tail Method
Adding scalar quantities is relatively simple: 6 sec. + 8 sec. =
Adding vectors is a little more challenging: You walk 6 mi. North, then turn and walk 8 miles East. How far are you from home?
The Tip to Tail Method
Always put the tip of one vector to the tail of the other.
The Resultant: The one vector that represents the sum of the vectors. This vector can effectively replace the other two vectors.
8 mi.
6 mi.
10 mi.