1. Convert mph to feet per minute:

* There are 5280 feet in a mile.

* There are 60 minutes in an hour.

* So, 30 mph is equal to (30 miles/hour) * (5280 feet/mile) / (60 minutes/hour) = 2640 feet/minute

2. Convert feet per minute to feet per second:

* There are 60 seconds in a minute.

* So, 2640 feet/minute is equal to (2640 feet/minute) / (60 seconds/minute) = 44 feet/second

Therefore, a car traveling at 30 mph will travel approximately 44 feet per second.