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Unit Converter

Conversion formula

The conversion factor from miles per hour to feet per second is 1.4666666666667, which means that 1 mile per hour is equal to 1.4666666666667 feet per second:

1 mph = 1.4666666666667 ft/s

To convert 39.9 miles per hour into feet per second we have to multiply 39.9 by the conversion factor in order to get the velocity amount from miles per hour to feet per second. We can also form a simple proportion to calculate the result:

1 mph → 1.4666666666667 ft/s

39.9 mph → V(ft/s)

Solve the above proportion to obtain the velocity V in feet per second:

V(ft/s) = 39.9 mph × 1.4666666666667 ft/s

V(ft/s) = 58.52 ft/s

The final result is:

39.9 mph → 58.52 ft/s

We conclude that 39.9 miles per hour is equivalent to 58.52 feet per second:

39.9 miles per hour = 58.52 feet per second

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot per second is equal to 0.017088174982912 × 39.9 miles per hour.

Another way is saying that 39.9 miles per hour is equal to 1 ÷ 0.017088174982912 feet per second.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that thirty-nine point nine miles per hour is approximately fifty-eight point five two feet per second:

39.9 mph ≅ 58.52 ft/s

An alternative is also that one foot per second is approximately zero point zero one seven times thirty-nine point nine miles per hour.

Conversion table

miles per hour to feet per second chart

For quick reference purposes, below is the conversion table you can use to convert from miles per hour to feet per second

miles per hour (mph) feet per second (ft/s)
40.9 miles per hour 59.987 feet per second
41.9 miles per hour 61.453 feet per second
42.9 miles per hour 62.92 feet per second
43.9 miles per hour 64.387 feet per second
44.9 miles per hour 65.853 feet per second
45.9 miles per hour 67.32 feet per second
46.9 miles per hour 68.787 feet per second
47.9 miles per hour 70.253 feet per second
48.9 miles per hour 71.72 feet per second
49.9 miles per hour 73.187 feet per second