The speed of light is 3.0×10⁵ km/sec,and it takes light 1.3 seconds for light to travel from the Moon to the Earth.Based on this information,what is the distance to the Moon?
A)2.3 kilometres
B)3.9 kilometres
C)230,000 kilometres
D)390,000 kilometres

Question

Quizplus · Accepted Answer

Using the formula Distance = Speed × Time, we can calculate the distance to the Moon. 
Distance = Speed × Time 
Distance = (3.0×10⁵ km/sec) × (1.3 seconds) 
Distance = 3.9×10⁵ km 
Therefore, the distance to the Moon is 390,000 kms, which is option D.

The Speed of Light Is 3