21 km/h
800 km per hour
1 hour = 3600 seconds 1 mile = 1.609344 km 1609 mi/hr * 1.609344 km/mi ~= 2589.43 km/h 2589.43 km/h / 3600 seconds/hr ~= 0.71929 km/s
77 kph
696km/320km x 4 = 8.7 hrs
502 miles is equal to approximately 808.8 kilometers.
1000 km/hrs
150 divided by 2.5 = 60 km/hour
312 MI/ 502 Km
45 min = 3/4 hrs4 km / (3/4 hrs) = 4*4 km/3 hrs = 5.33333... km/hrs
21 km/h
Azerbaijan - Baku 2457.8 miles / 3955.4 km / 5 hrs, 6 mins Burkina Faso - Ouagadougou 2701 miles / 4346.8 km / 5 hrs, 36 Cape Verde - Praia 2848.1 miles / 4583.6 km / 5 hrs, 55 mins Gambia - Banjul 2780.4 miles / 4474.5 km / 5 hrs, 46 minsGuinea Bissau - Bissau 2879.8 miles / 4634.6 km / 5 hrs, 59 minsIran - Tehran 2735.3 miles / 4402.1 km / 5 hrs, 41 minsIraq - Baghdad 2538 miles / 4084.6 km / 5 hrs, 16 mins Kuwait - Kuwait City 2888.1 miles / 4648 km / 5 hrs, 60 minsMali - Bamako 2721.3 miles / 4379.5 km / 5 hrs, 39 minsMauritania - Nouakchott 2449.3 miles / 3941.8 km / 5 hrs, 5 minsNiger - Niamey 2626.7 miles / 4227.3 km / 5 hrs, 27 minsPalau - Melekeok 7570.6 miles / 12183.7 km / 15 hrs, 43 minsSaint Pierre and Miquelon - Saint-Pierre 2490.3 miles / 4007.8 km / 5 hrs, 10 minsSenegal - Dakar 2722.8 miles / 4381.9 km / 5 hrs, 39 mins
#1; 10 km @ 40 kmph = 0.25 hrs 15 mins) #2; 10 km @ 60 kmph = 0.166666..... hrs 10 min #3; 10 km @ 20 kmph = 0.5 hrs 30 mins. Distance = 30 km Time = 0.25 + 0.16666... + 0.5 = 0.9166666... hrs Hence average speed is 30 km / 0.916666... = 32.7272... kmph 7272
4hr 48min = 4 + 48/60 hrs = 4.8 hrs 203 km in 4hr 48 min => 203 / 4.8 ~= 42.3 km in 1 hour About 42.3 km/h
40/5 = 8 km/hr
2*40 = 80 km
If you want the average speed, add all the distances, add all the times, then divide distance by time.