1. (Scenario 1) A small steel ball (ball 1) is released from rest on a semi-circular track from a height h, above the lowest point of the track, where two more identical balls (ball 2 and ball 3) are at rest. As shown in the figure to the right. Ball 1 rolls down the track, collides with ball 2, which causes ball 3 to launch along the track. a. [4 pts] Draw an “energy cubes” diagram for the following 3 instants: (1) when ball 1 is at the top of the track, (2) when ball 1 is at the bottom of the track and is about to collide with ball 2, and (3) when ball 3 is at its maximum height on the right side of the track. Be now to label the relevant objects in your diagram.