Answer:
40 meters per second.
Step-by-step explanation:
If there are 1600 meters in one mile, there are 144,000 meters in 90 miles meaning 90 mph is 144,000 meters per hour.
There are 3,600 seconds in an hour so there would be
144,000 meters ÷ 3,600 seconds = 40 meters per second.
