[Load Homework 9.]

A blue ball collides with a red ball. Both the blue ball and the red ball have a mass of 2 kg. Before the collision, the velocity of the red ball is 1 m/s in the negative x direction. Using the applet below, determine the speed and direction with which the red ball leaves the collision. Is this an elastic collision? Show and explain your work. Since no data is given for the red ball, your calculations will have to be based on data taken from the blue ball. Assume there are no net external forces (the blue and red ball together constitute a closed system).