1. The problem statement, all variables and given/known data A block is sent up a frictionless ramp along which an x axis extends upward. The figure below gives the kinetic energy of the block as a function of position x; the scale of the figure's vertical axis is set by Ks = 46.0 J. If the block's initial speed is 4.50 m/s, what is the normal force on the block? 2. Relevant equations Fn=mg K=(1/2)m(v^2) 3. The attempt at a solution Solved K=(1/2)m(v^2) for m and got 4.54 kg. Plugged m into Fn=mg. I got 44.5 N but this is not correct. What am I doing wrong?