The speed of light is $3.0 × 10^5$ km/s, and it takes 1.3 s for light to travel from the Moon to Earth. From this information, what is the distance to the Moon
A)390,000 km
B)230,000 km
C)3.9 km
D)2.3 km
E)$4.3 × 10^5$ km

Question

Quizplus · Accepted Answer

The distance to the Moon can be calculated using the formula distance = speed × time. Given the speed of light is $3.0 × 10^5$ km/s and it takes 1.3 s for light to travel from the Moon to Earth, the distance is $3.0 × 10^5 \, \text{km/s} \times 1.3 \, \text{s} = 3.9 × 10^5$ km, which is 390,000 km.

The Speed of Light Is 3.0×1053.0 × 10^53.0×105 Km/s, and It Takes 1

The Speed of Light Is $3.0 × 10^5$ Km/s, and It Takes 1