Chapter 8.4, Problem 31SR

To determine

To calculate: To convert in feet per second

Answer to Problem 31SR

  $17miles/hour$ is $25feet/seconds$

Explanation of Solution

Given information: A raindrop falls from the sky at about $17$ miles per hour

Formula Used:

  $1mile=5280foot$

  $1hour=3600\sec$

Calculation:

Given that a raindrop falls from the sky at about $17$ miles per hour

Converting into feet per second:

  $\begin{array}{l}17miles/hour=\frac{17\times 5280}{3600}feet/seconds\\ 17miles/hour=\frac{17\times 528}{360}feet/seconds\\ 17miles/hour=\frac{17\times 66}{45}feet/seconds\\ 17miles/hour=\frac{1122}{45}feet/seconds\\ 17miles/hour=24.93feet/seconds\\ 17miles/hour=25feet/seconds\end{array}$

Conclusion:

Hence, $17miles/hour$ is $25feet/seconds$