Aspaceship 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

The softest and hardest minerals are: softest hardest

True or false graphs must include scales that increase by the same amount

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.