Question

A lighthouse beacon alerts ships to the danger of a rocky coastline.
Part A
According to the lighthouse keeper, with what speed does the light leave the lighthouse?

v/c=

A boat is approaching the coastline at speed 0.5. According to the captain, with what speed is the light from the beacon approaching her boat?

v/c=

I understand both answer depends on c,but what are they in terms of v/c=?

Answer 1

the answer is "1" for both questions. i just did it on mastering physics.