How many kilometers would it take for light to travel in 4 1/2 minutes?

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Answer 1 · 2018-03-21T00:57:53

Light would travel #8.10*10^7 km# in 4 1/2 minutes.

The speed of light is #3*10^5 (km)/s#. The distance, s, light would travel in 4 1/2 minutes is

#s = 3*10^5 (km)/s * 4 1/2 "minutes" * (60 s)/(1 "minute")#

#s = 810*10^5 km = 8.10*10^7 km#

Answer 2 · 2018-03-21T07:45:23

It would travel approximately #8.1*10^8 \ "km"#.

Well, we have to use the distance equation, which states that,

#d=v*t#

#v# is the velocity of the object

#t# is the time of the object

We have the speed of light, #v=3*10^5 \ "km/s", :. t=4.5*60=270 \ "s"#.

#d=(3*10^5 \ "km")/(color(red)cancelcolor(black)"s")*270color(red)cancelcolor(black)"s"#

#=8.1*10^8 \ "km"#