Answer:
2.0 vertical feet per second
Explanation:
First, determine the vertical distance covered by Mark.
[tex]\begin{gathered} \text{Vertical Distance=}8585-6574 \\ =2011\text{ ft} \end{gathered}[/tex]Next, convert the fastest reported time for running up the incline( 16 minutes and 42 seconds) to seconds.
[tex]\begin{gathered} 16\text{ mins 42 seconds = (}16\times60)+42 \\ =960+42 \\ =1002\text{ seconds} \end{gathered}[/tex]Finally, determine Mark's vertical feet per second:
[tex]\begin{gathered} \text{Mark's vertical sp}eed\text{ per second=}\frac{2011}{1002} \\ =2.007\text{ ft per second} \\ \approx2.0\text{ ft per second (to 1 decimal digit)} \end{gathered}[/tex]Mark climbed at a rate of 2.0 vertical feet per second.
