The speed of light is 3.0*10⁵ 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*10⁵ km

Question

Quizplus · Accepted Answer

Distance= (Speed of light × Time taken) 
Distance= (3.0 × 10^5 km/s) × (1.3 s) 
Distance= 3.9 × 10^5 km 
Therefore, the distance to the moon is 390,000 km. Therefore, the correct choice is A.

The Speed of Light Is 3