A swimmer attempts to reach the other side of the Fraser River, which has a width…

A swimmer attempts to reach the other side of the Fraser River,
which has a width of 35m near
Hell’s Gate1. This swimmer can swim at 11.6m/s, but Fraser River
has a downstream current moving
at roughly 0.50m/s to the west.
a) If the swimmer heads straight north for the other side of Fraser
River, how long will that take?
b) If there were NO current, would the swimmer take just as long as
in question “a”? Why or why not?
c) Draw and find the swimmer’s resultant velocity for question “a”
while taking the current into
consideration.
*d) In which direction should the swimmer head to reach the other
side of Fraser River while moving
in a straight line?