Journal Entry 11/30 Continued

Positive and Negative Velocity are determined based on the coordinate system used to describe the movement of an object. If a number line is used, and a ball starts at zero, then movement to the right would be considered to have a positive velocity, while movement to the left would be considered to have a negative velocity. Now if the number line was flipped over with the positive numbers on the left side and the negative numbers on the right side, the balls movement to the the right would still have a positive velocity, while movement to the left would still have a negative velocity. When you decide that movement in one direction is positive, then movement in the opposite direction is negative.