A spaceship leaves a space station and emits a flash of light that travels at a speed of 300,000 km/s. The spaceship starts out travelling at 1/4 the speed of light, but ends up travelling at 99/100 the speed of light. What does a scientist on the space station measure the speed of the flash to be?

B. (1/4) x 300, 000 km/s

C. (1/100) x 300, 000 km/s

D. 300, 000 km/s

Q&A Education