the speed of light is about 300,000 kilometers per second. Convert the speed to miles per hour

Answer 1

1 mile = 1.609344 km

1 km = 1 / 1.609344 miles

1 h = 3600 sec

300 000 km / s = 300 000 ∙ ( 1 / 1.609344 ) ∙ 3600 = 671 080 887.61632 =

6.7108088761632 ∙ 10⁸ ≈ 6.71081 ∙ 10⁸ miles / hour