Answer:
t = 0.051 seconds
Step-by-step explanation:
Given that,
A skydiver jumped out of a plane and fell 9 miles to the ground. It means 9 miles is the distance covered.
The average speed of the skydiver is 174 miles/hour
We need to find the time for which he dive last. It means t is the time taken. Total distance covered divided by time taken is called average speed. So,
![v=(d)/(t)\\\\t=(d)/(v)\\\\t=(9)/(174)\\\\t=0.051\ s](https://img.qammunity.org/2021/formulas/physics/high-school/plyqqd3ocwpyxoud0ko5qb3riomnxttmyj.png)
So, a skydiver dive for 0.051 seconds.