Question

what is speed of light in 1 hour

Answer 1

To convert this measurement, we need to convert meters to miles and seconds to hours. To do this, we need the following relationships:

1000 meter = 1 kilometer
1 kilometers = 0.621 mile
60 seconds = 1 minute
60 minutes = 1 hour

We can now set up the equation using these relationships so the units cancel out leaving only the desired miles/hour.

speedMPH = 2.998 x 108 m/sec x (1 km/1000 m) x (0.621 mi/1 km) x (60 sec/1 min) x (60 min/1 hr)

Note all the units cancelled out, leaving only miles/hr:

speedMPH = (2.998 x 108 x 1/1000 x 0.621 x 60 x 60) miles/hr

speedMPH = 6.702 x 108 miles/hr

ANSWER

The speed of light in miles per hour is 6.702 x 108 miles/hr.

Answer 2

The speed of light remains consistent.