Dave rows a boat across a river at 4.0 m/s. The river flows at 6.0 m/s and is 360 m across.
a. In what direction, relative to the shore, does Dave's boat go?
b. How long does it take Dave to cross the river?
c. How far downstream is Dave's landing point?
d. How long would it take Dave to cross the river if there were no current?