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 metres = 0.249 miles.
400 km per hour is 248.55 miles per hour.
400 m = 0.2485 miles
There are 5280 feet in one mile. Therefore, 400 miles per hour is equal to 400 x 5280 = 2112000 feet per hour.
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.
301 kilometers per hour is 187.03 miles per hour.
(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 kph = 248.55 mph
400/5 = 80 miles per hour
Answer: 400 km/h = 248.548 mph