Question

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements.

Light travels approximately 982,080,000 ft/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year.

Calculate the distance of one light year in feet.

Answer 1

The answer is 3.142656E16.

Answer 2

The distance of one light year is
`3.142* 10^(16) feet`.

Step-by-step explanation:

Let the distance light travels in one year be D

Speed of the light = S = 982,080,000 feet/second

Time taken by the light = T = 1 year = 32,000,000 seconds

Speed of moving body is calculated by the dividing distance from the time taken by the body to cover the same distance.

`Speed=(Distance)/(time)`

`S=(D)/(T)`

`D=S* T=982,080,000 feet/second* 32,000,000 seconds`
`D=3.142* 10^(16) feet`

The distance of one light year is
`3.142* 10^(16) feet`.