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 inches.

2.6 x 1015 in
9.310 in
1.0 x 1016 in
3.8 x 1017 in

Answer 1

3.8 x1017 is the correct answer

Answer 2

3.8 x 10¹⁷ in

Step-by-step explanation:

Light speed= 982,080,000 ft/s

year(time)= 32,000,000 seconds

converting ft/s to in/s for the speed of light:

1ft/s = 12 in/s

982,080,000 ft/s x 12in/s = 11,784,960,000 in/s ( speed of light in inches)

using the standard formula for speed:

V=
`(Distance)/(Time)`

Distance( inches)= V (speed in/s) x Time (seconds)

Distance = 11,784,960,000 x 32,000,000

Distance≅ 3.8 x 10¹⁷ in