Areporter once described a light-year as ""the time it takes light to reach us traveling at the speed of light."" how would you correct this statement?

A light-year is a unit of distance. It is the distance travelled by light in one year.

Explanation:

A light-year is a unit of distance. It is the distance travelled by the light in one year. The speed of the light is 3×10⁸ m/s.

Light year also indicates how far back in time you are looking at. For example, if we are looking at something 10 light-years away that means it took light 10 years to reach us. So, in essence we are looking at the light which is 10 years old. In a way we are looking in the past.

the answer is b

explanation:

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.