A light-year is the distance light (speed = 2.998 108 m/s) travels in one year.
(a) How many meters are there in 16.0 light-years?
(b) An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 108 km. How many AU are there in 16.0 light-year?
(c) What is the speed of light in AU/h?