PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics
Problem
A river flows eastward with a uniform speed. Swimmer P aims straight toward the north bank relative to the water, while swimmer Q chooses a heading that allows arrival at a point directly opposite the starting point. Which statement correctly describes their motions relative to the ground?
(a) Swimmer P reaches the north bank in the same time as swimmer Q but lands downstream from the point directly opposite the start.
(b) Swimmer P reaches the north bank sooner than swimmer Q but lands downstream from the point directly opposite the start.
(c) Swimmer P reaches the north bank sooner than swimmer Q and lands directly opposite the starting point.
(d) Swimmer P takes longer than swimmer Q to reach the north bank and lands downstream from the point directly opposite the start.