The measured value of the speed of light is about 300,000 km/s. Suppose a futuristic space train is traveling at 200,000 km/s with its headlights on. If you could measure the speed of the light from the headlights, you would find it to be
A. 200,000 km/s.
B. 100,000 km/s.
C. 300,000 km/s.
D. 500,000 km/s.
Answer:C
The measured value of the speed of light is about 300,000 km/s. Suppose a futuristic space train is traveling at 200,000 km/s with its headlights on. If you could measure the speed of the light from the headlights, you would find it to be
A. 200,000 km/s. B. 100,000 km/s. C. 300,000 km/s. D. 500,000 km/s.