A river is 0.76 km wide.The banks are straight and parallel.The current is 5.0 km/h and is parallel to the banks.A boat has a maximum speed of 3 km/h in still water.The pilot of the boat wishes to travel on a straight line from A to B,where AB is perpendicular to the banks.The pilot should
A)head directly across the river.
B)head 68º upstream from the line AB.
C)head 22º upstream from the line AB.
D)give up.The trip from A to B is not possible with this boat.
E)do none of these.

Question

Quizplus · Accepted Answer

The boat's maximum speed in still water is less than the river's current speed, making it impossible to travel directly across the river in a straight line from A to B.

A River Is 0