If the speed of light is 3x10^8, determine the distance it takes in 1 light year. Report your results in km and in m. ????

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Answer 1 · 2018-06-20T08:38:24

Well...#c_"the speed of light"=3.0xx10^8*m*s^-1#...

And so we multiply this BY ONE year to get the distance travelled:

#3.0xx10^8*cancel(m*s^-1)xx1*cancel"year"xx365*cancel"days"*cancel"year"^-1#

#xx24*cancel("hours"*"day"^-1)#

# xx 60*cancel("minutes"*"hour"^-1)#

# xx 60*cancel("seconds"*"minute"^-1)#

#-=9.5xx10^15*m#... ugh arithmetic...

And you can report the distance in #"kilometres"#. How?