Question

1. choose the best answer.

the speed of light is _.
875 km/s (544 mi/s)
64 599 km/s (40,140 mi/s)
7201 km/s (4474 mi/s)
299 792 km/s (186,282 mi/s)

Explanation:

The speed of light in a vacuum is a well - known physical constant. Through scientific research and measurements, it has been determined that the speed of light is approximately 299,792 kilometers per second (or 186,282 miles per second). By comparing this known value with the given options, we can see that the last option matches this value.

Answer:

D. 299 792 km/s (186,282 mi/s)