Question

A​ parachutist's elevation changes by -90 ft in 9 seconds. What is the change in the​ parachutist's elevation each​ second?

Answer 1

The change in the Parachutists elevation each second is 10ft

Explanation:

If you divide the elevation -90ft by 9 seconds you will get the feet per second. (-90/9) Hope this helps :D

Answer 2

Divide total distance by total time:

-90 /9 = -10

Answer: -10 feet per second