Question
A football quarterback runs 15.0 m straight down the playing field in 2.50 s. He is then hit and pushed 3.00 m straight backward in 1.75 s. He breaks the tackle and runs straight forward another 21.0 m in 5.20 s. Calculate his average velocity (a) for each of the three intervals and (b) for the entire motion.
1. $\bar{v}_1 = 6.00 \textrm{ m/s}$
$\bar{v}_2 = -1.71 \textrm{ m/s}$
$\bar{v}_3 = 4.04 \textrm{ m/s}$
2. $\bar{v} = 3.49 \textrm{ m/s}$
Solution Video