This is for my dynamics class, but anywaya. A particle moves along a curve y=e2x such that its velocity has a constant magnitude of v=4ft/s. Determine the x and y components of the velocity when y =5ft ? Im confused on this. So when i plug 5 into the equation is get .804 ft. Now thats the movement in the x direction. then i differentiate and get a tangent line to the curve. dy/dx=2e2x . Now im confused. What i do. Can someone please explain me this. Its bugging me like crazy!