Light travels at 300,000 km/sec. About how far does light travel in 10 years?
A) About 10 light-years
B) About 3,000,000 kilometers
C) About 30 million seconds
D) About 30,000 kilometers
E) About 10 trillion kilometers

Question

Quizplus · Accepted Answer

E  A light-year is the distance light travels in one year. Therefore, in 10 years, light travels about 10 light-years. Since light travels 300,000 km/sec, in one year it travels approximately 9.46 trillion kilometers, so in 10 years, it travels about 10 trillion kilometers.

Light Travels at 300,000 Km/sec