Question

So, I need help with this question:
A light-year is the distance light travels in one year, at a speed = 2.998 x 10^8 m/s.

(a) How many meters are there in 1.00 light years?
(b) An AU is the average distance from the Sun to the Earth, 1.50 x 10^8 How many AU are there in 1.00 light-year?
(c) What is the speed of light in AU/h?

Answer 1

2.998 x 10^8 m / s x 60 s / m x 60 m /h x 24 h /d x 365 d / year

Multiply those numbers to get m/year

Answer 2

So you multiply those numbers in order to cancel out the seconds, right?

Answer 3

yes, to change from seconds to years

Answer 4

Alright :) Thanks! What about hte other two? :[

Answer 5

Take your new answer and divide by 1.5 x 10^8 to get how many AU's in a light year.

Answer 6

-nodnod- Alright, thanks :]