Answer:195 miles per hour is approximately 286.67 feet per second.
Step-by-step explanation: To convert miles per hour to feet per second, we need to use the unit fractions you've provided.
Given:
1 mi = 5280 ft
1 hr = 60 min
1 min = 60 sec
We need to convert 195 miles per hour to feet per second.
Start with 195 mi/hr.
Multiply by fractions equivalent to 1, in a way that cancels out the units you don't want and leaves the units you do want.
195 mi/hr * (5280 ft/1 mi) * (1 hr/60 min) * (1 min/60 sec)
The mi units cancel, the hr units cancel, and the min units cancel, leaving ft/sec.
This equals: 195 * 5280/3600 ft/sec
= 286.67 ft/sec