if a light year is the distance that light travels in one year , find the number of miles , meters and kilometers in one light year .

Question

Can a tutor please help me answer this question showing all the possible calculations for this question need so as to me having a cleare idea on how to answer questions like these next time i come across them. 

Answer 1

Google says the speed of light, c = 299,792,458 m/s = 186,282.397 miles/s.

 

(60 seconds/min)(60 min/hour)(24 hrs/day)(365.25 days/year)

= 31557600 seconds/year

 

1 light year = (299,792,458 m/s)(31557600 seconds/year)(1 year)

= 9,460,730,472,580,800 meters

= 9,460,730,472,580.8 kilometers

 

1 light year = (186,282.397 miles/s)(31557600 seconds/year)(1 year)

= 5,878,625,371,567.2 miles