the boat needs to follow a course that results in a 5 mph upstream component
5 = 10 cos(Θ) ... the cosine of 60º is 1/2
the boat should aim upstream at an angle of 60º to the shore
A women launches a boat from one shore of a straight river and wants to land at the point directly on the opposite shore. IF the speed of the boat is 10 mi/h and the river is flowing east at the rate of 5 mi/h, in what direction should she head the boat in order to arrive at the desired landing point?
2 answers
Did you make your diagram?
On mine:
sinØ = 5/10
Ø = 30°
so aim for N 30° W, assuming she want to head directly north.
On mine:
sinØ = 5/10
Ø = 30°
so aim for N 30° W, assuming she want to head directly north.
1 answer