Question

The speed of light is 300,000 km/s. How far is a light-day? Be
sure to show your steps.

Answer 1

A light-day is
`2.592 * 10^(10) \ km`

Step-by-step explanation:

The speed of light is c

c = 300,000 km/s

Now, a light-day is how far light travels in a day.

Now,

number of seconds in a day = t = 86400 s

The formula for distance is,

d = vt

In this case, the velocity v is c i.e. the speed of light and t is the time,

so,

d = (300,000 km/s)(86400 s)

`d = 2.592 * 10^(10) \ km`