A River Flows Due East at 2

Multiple Choice

A river flows due east at 2.0 m/s.A boat crosses the 300 m-wide river by maintaining a constant velocity of 10 m/s due north relative to the water.If no correction is made for the current,how far downstream does the boat move by the time it reaches the far shore?

A) 6 m
B) 30 m
C) 60 m
D) 90 m