Mach 5 speed is equivalent to approximately 3,836 miles per hour (6,174 kilometers per hour).
It is: 5/8*245 km = 153.125 miles
You didn't actually say what you wanted to convert the "kilometers per hour" to, but let's take a wild guess and say you wanted to convert them to MPH. The fastest calculation you can easily make in your head is multiply by 5, and then divide the result by 8. (It's a 1.6 ratio, give or take) So if I wanted to convert 80 kilometers per hour, I'd multiply that number by 5 to get 400, and divide by 8 to get 50MPH. Try converting 88 kilometers per hour and see if you can get it done in your head. :)
You need to convert miles to kilometers, ie. multiply 65 by 1.61. The answer then is 104.65, which in practice would be nearer 100 km/h. I'm basing this on the asumption that your speedometer doesn't have miles - only kilometers and you want an answer that will keep you within the legal limit. I lived in Europe for 10 years. We divided by 8 and multiplied by 5 to convert from kilometers to miles, and divided by 5 and multiplied by 8 to convert from miles to kilometers. It is a rough, but very accurate conversion that you can do in your head most times, and it keeps you legal. In your example 65 divided by 5 is 13. 13 times 8 is 104 kilometers. As you can see, the error is less than 1 kph and no cop in the world cares about that.
To reach Venus in 5 days, you would need to travel at a speed of over 25,000 kilometers per hour. This is because Venus is an average distance of about 41 million kilometers from Earth. Reaching such speeds with current propulsion technology is not feasible for crewed missions.
It is about: 8/5 times 257.44 = 411.904 km per hour
To convert from kilometers per hour, to miles per hour you should divide by 8 and then multiply by 5. So 366kph = 228.75 miles per hour.
Mach 5 speed is equivalent to approximately 3,836 miles per hour (6,174 kilometers per hour).
The average speed of the car is 60 kilometers per hour (300 km divided by 5 hours).
About 126.4. Five miles ar, so you can divide by 5 and multiply by 8.
It is: 5/8*245 km = 153.125 miles
197 X 5 = 985 985 / 8 = 123.125 M.P.H.
18 x 5 / 8 = 11.25mph
1mile=1.6 kilometers. divide 8 by 1.6 and you get the final answer wich is 5 miles. The formula for the conversion is:8 km* 1 mi 1.609344 km = 4.970969538 mi
The ISS travels at almost 5 miles per second (17,500 miles per hour or 28,000 kilometers per hour). It orbits Earth once in 92 minutes presently.
1 mile = 1.609 km8/1.609 = 4.978 kmh = 5 mph (rounded off)
To roughly convert kph to mph, divide by 8 and multiple the result by 5.