1. The problem statement, all variables and given/known data A swimmer jumps into a 5.1 km river and swims straight to the other side at 0.87 km/h [N]. There is a current in the river of 2.0 km/h [W] a)How long does it take the swimmer to reach the other side? b)How far downstream has the current moved her by the time she reaches the other side? 2. Relevant equations v= d/t a^2+b^2=c^2 3. The attempt at a solution a) I got the correct answer but I don't understand why the 0.87 km/h [N] was used instead of the 2.0 km[W] t=d/v t=5.1/0.87 t=5.9 hrs b) total velocity= √0.87^2+2^2 =2.18 I'm really not sure what I'm trying to look for??