A light year (speed of light 2.998x10^8 m/s) is the distance light travels in a year. How many meters are there in 1 light year? (Answer:9.45x10^15 m/yr)
physics - drwls, Friday, September 10, 2010 at 4:27pm
Multiply the speed by the number of seconds in a year. You need to learn to do this kind of simple problem yourself.