Unit Converter
Conversion formula
The conversion factor from kilometers per hour to feet per second is 0.91134441528215, which means that 1 kilometer per hour is equal to 0.91134441528215 feet per second:
1 km/h = 0.91134441528215 ft/s
To convert 138.5 kilometers per hour into feet per second we have to multiply 138.5 by the conversion factor in order to get the velocity amount from kilometers per hour to feet per second. We can also form a simple proportion to calculate the result:
1 km/h → 0.91134441528215 ft/s
138.5 km/h → V(ft/s)
Solve the above proportion to obtain the velocity V in feet per second:
V(ft/s) = 138.5 km/h × 0.91134441528215 ft/s
V(ft/s) = 126.22120151658 ft/s
The final result is:
138.5 km/h → 126.22120151658 ft/s
We conclude that 138.5 kilometers per hour is equivalent to 126.22120151658 feet per second:
138.5 kilometers per hour = 126.22120151658 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 0.007922599277972 × 138.5 kilometers per hour.
Another way is saying that 138.5 kilometers per hour is equal to 1 ÷ 0.007922599277972 feet per second.
Approximate result
For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred thirty-eight point five kilometers per hour is approximately one hundred twenty-six point two two one feet per second:
138.5 km/h ≅ 126.221 ft/s
An alternative is also that one foot per second is approximately zero point zero zero eight times one hundred thirty-eight point five kilometers per hour.
Conversion table
kilometers per hour to feet per second chart
For quick reference purposes, below is the conversion table you can use to convert from kilometers per hour to feet per second
kilometers per hour (km/h) | feet per second (ft/s) |
---|---|
139.5 kilometers per hour | 127.133 feet per second |
140.5 kilometers per hour | 128.044 feet per second |
141.5 kilometers per hour | 128.955 feet per second |
142.5 kilometers per hour | 129.867 feet per second |
143.5 kilometers per hour | 130.778 feet per second |
144.5 kilometers per hour | 131.689 feet per second |
145.5 kilometers per hour | 132.601 feet per second |
146.5 kilometers per hour | 133.512 feet per second |
147.5 kilometers per hour | 134.423 feet per second |
148.5 kilometers per hour | 135.335 feet per second |