PLEASE HELP A dog is running in a straight line to catch a ball. Its motion is shown on the following graph of horizontal
position 2 vs. time t. What is the average velocity of the dog between the times t=2s and t=6s?

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative