Physics Relativity Level: Misc Level

On a pleasure cruise a boat is traveling relative to the water at a speed of 5.0 m/s due south. Relative to the boat, a passenger walks toward the back of the boat at speed of 1.5 m/s.

a) What is the magnitude and direction of the passenger s velocity relative to the water ?

b) How long does it take for the passenger to walk a distance of 27 m on the boat?

c) How long does it take for the passenger to cover a distance of 27 m on the water?