A boat crosses a river of width 120 m in which
the current has a uniform speed of 2.04 m/s.
The pilot maintains a bearing (i.e., the direc-
tion in which the boat points) perpendicular
to the river and a throttle setting to give a
constant speed of 2.58 m/s relative to the wa-
ter.
What is the magnitude of the speed of the
boat relative to a stationary shore observer?
Answer in units of m/s