Speed of light
earthquake
A fighter jet.
Expressed in kilometres per hour, this is equal to 300/6 = 50 kilometres per hour.
If it travels x kilometres in 1 hour, it is travelling at x km/h.
90 kilometres per hour.
Assuming the runner maintains his average speed for an hour, 3 kilometres in 30 minutes is equal to 6 kilometres per hour.
Average speed is distance over time, so (25 + 35)/(.5 + 1.5) = 60/2 = 30 km/hr
Approximately 124.3 mi/h
Nothing does. That speed is 3.5% greater than the speed of light.
0.03 miles = 0.048 kilometres so 0.03 mph = 0.048 kilometres per hour.
Nothing in the known universe - since the speed of light is 1080 million kilometres per hour !
10 miles per hour is approximately 16.1 km per hour.