400 miles per hour equates to 643.7 km/h or 586.7 feet per second.
The speed appears to be 400 miles an hour. If you meant 400 miles, the speed is 50 miles an hour.
Answer: 4000 km = 2485.484 mi.
400 m = 0.2485 miles
400 metres = 0.249 miles.
400 km per hour is 248.55 miles per hour.
There are 5280 feet in one mile. Therefore, 400 miles per hour is equal to 400 x 5280 = 2112000 feet per hour.
301 kilometers per hour is 187.03 miles per hour.
400 kph = 248.55 mph
400 miles per hour is equivalent to 586.67 feet per second. To convert miles per hour to feet per second, you can use the conversion factor that 1 mile is equal to 5280 feet and 1 hour is equal to 3600 seconds.
(400 miles/trip) x (1 hour / 70 miles) = (400/70) (miles-hour / trip-miles) = 5.7143 hours = 5 hours 43 minutes, with no stops.
400/5 = 80 miles per hour
Answer: 400 km/h = 248.548 mph