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300km in 3 hours = 100km per hour
A millisecond is one thousandth of a second. Light can travel about 300km in a millisecond. Blinking usually takes between 300 and 400 milliseconds.
420km
First, you put it into a scale 1mm:300km Second, you times the whole thing by 10 so that the 1 millimeter will become 1 centimeter 1cm:3 000km Next, you convert the 300 kilometers into meter 1cm:3 000 000 After that, you convert the 3 000 000 into centimeters 1cm:300 000 000cm Lastly, remove the 'cm' sign as they are both of the same units already 1:300 000 000
Velocity (or speed) = Distance ÷ Time In this example, speed = 300/6 = 50 kph