Question

The conversion factor relating miles to meters is 1mile=1610m. The speed of light is 3.00×108 m/s. How fast is this in miles per hour (miles/h)?

Answer 1

Speed of light = 3.00 x 10^8 m/s

1 mile = 1610 m, it implies that 1 m = 1/1610 mile

1 s = 1/3600 hour

Speed of light = (3.00 x 10^8 x (1/1610) mile) / (1/3600) hour

Speed of light = 6.708 x 10^8 miles per hour