Practice Problem 2-10

A billiard ball travels $0.46 \;m$ in the $+x$ direction, having started at the origin $(x = 0)$, bounces off another ball to travel $0.84\; m$ in the opposite direction, then bounces from the edge of the billiard table finally coming to rest $0.12 \;m$ from that edge. The entire motion is one-dimensional and takes $2.5 \;s$. Determine the billiard ball's (a) average speed, (b) final position, (c) average velocity.

The average speed is given by:
 
(A)  $\text{average speed = (distance traveled)/time}$

(B)  $\text{average speed = displacement/time}$