27,538 km/sec = 323,125.984 million ft/hr (rounded)
27,358 km/hr = 24,932.6 ft/sec (rounded)
2500 (feet per second) = 157,173.782 kilometers
45 kilometers/second (1 mile/1.609 kilometers)(5280 feet/1 mile) = 147,669 feet per second ===================
1.26 kilometers is about 4,133.9 feet.
55 square meters = 592.02 square feet (rounded)
30 kilometers per hour = 27.34 feet per second.
0.024384 kilometers per second
222 feet per second equates to 243.596 kilometers per hour.
(Feet per second x 1.1 = km/h). So, 500 fps x 1.1 = 550 kilometers per hour.
830000000 km/hour = 830000000/3600 km/second = 230555.6 km/second = 756,416,010.5 feet/second
A kilometre is a unit of distance. Feet per second is a unit of speed. The two units are therefore incompatible.
60 kilometers (km) per hour is equal to about 54.7 feet per second.