You row a boat perpendicular to the shore of a river that flows at 3.0 m/s. The velocity of your boat is 4.0 m/s relative to the water. a. What is your velocity of your boat relative to the shore? b. What is the component of your velocity parallel to the shore? Perpendicular to it? A was very easy... If you draw it out, you can easily see that it's a 3,4,5 triangle, so the answer to A is 5 m/s. I'm not sure how to work out B. Which number do I use to find the components? Would the parallel to the shore component be 4 m/s? Would the perpendicular be 3 m/s? I'm not sure.. Or is it totally different numbers? Help with part B please.