[SOLVED] Energy Question. I REALLY NEED HELP 1. The problem statement, all variables and given/known data A block of 1 kg is sent sliding down a frictionless curved ramp. The block reaches the horizontal and hits a rough surface where a frictionless force of 2N acts for 5 meters. The block continues on, going up the frictionless incline. The height of the ramp is also 5 meters. a) Wwhat is the energy at point A? (points A is at the beginning of the ramp) b) What is the velocity of the block at point B? (Point B is at the bottom of the ramp but not in the center, it is right before the disturbance--or 2N of force--starts to act) c) What is the velocity at point C? (Point C is after the disturbance of 2N) d) What is the height up the incline reached by the box? 2. Relevant equations a) Ug = mgh b) Ug=mgh and K= m(vsquared) / 2 so you set them equal to each other. c) W=Fs FORCE AND DISPLACEMENT i DONT KNOW HOW TO DO THIS ONE. D) I REALLY DON'T KNOW HOW TO DO THIS PART? 3. The attempt at a solution a) 50 J B) 10 m/s C) ?? D) ???