A river flows due east with aspeed of 2.2 m/s. A man steers amotorboat across the river. His velocity relative to the water is3.9 m/s due south. The river is 800 m wide.
(a) What is his velocity relative to the earth?
magnitude
m/s
direction
° (counterclockwise from east ispositive)
(b) How much time is required to cross the river?
s
(c) How far east of his starting pointwill he reach the opposite bank?
m