1. Draw a line across a sheet of lined notebook paper lengthwise. Place an X at the center. Each space to the right of the X will model a force of 1 N east, and each space to the left will model 1 N west.

2. Suppose a force of 3 N east and a force of 11 N west act on a moving object. Model these forces by starting at X and drawing a red arrow three spaces to the right. Then, start at that point and draw a blue arrow 11 spaces to the left. The net force is modeled by how far this point is from X, 8 N west.

3. Are the forces you modeled balanced or unbalanced> Will the forces change the object's motion?