I'm sorry but this makes no sense
If a car is moving at 100 feet per second, then it is traveling at 100 feet per second.
146.6 feet per second.
About 41 feet per second.
About 4.55 feet per second.
73.33 feet per second.
100 mph = 146.66 feet per second
6.1 mph = 8.95 feet / second.
8 mph = 11.7 feet per second.
5.583 feet per second.
90 feet
Mach 1 per second is 230,281,663 feet per second.
51.3333 feet per second