1 mph is 1.47 fps
Nine feet in one second = 6.14 mph
30.8 feet in one second.
10 mph = 14.6 feet per second.
Multiply mph by 0.00045 to get km per second.
About 7.33 feet in one second at five miles per hour.
1 mile per hour equates to 5,280 feet per hour or 1.467 feet per second.
At 30 mph it takes about one second to travel 45 feet.
2 000 000 000 feet in one second
1 mph = 1.609344 km/h (According to Google Calculator)
That depends on vehicle speed. At 60 mph a vehicle covers 88 feet in one second. It also depends on the length of the car, but assuming the average car is 15 feet in length, it takes less than 2 tenths of a second to travel one "car length" at 60 mph. So in one second, the average car covers almost 6 car lengths! Double the speed - 120 mph - and that same car covers 176 feet in one second; more than half the length of a football field.
At 55 mph you are traveling 80.66 feet per second and after one hour at that speed you will have traveled 290,400 feet.
One sixtieth of a mile = 88 feet.