1. The problem statement, all variables and given/known data You've taken a summer job at a water park. In one stunt, a water skier is going to glide up the 2.0-m-high frictionless ramp shown, then sail over a 5.0-m-wide tank filled with hungry sharks. You will be driving the boat that pulls her to the ramp. She'll drop the tow rope at the base of the ramp just as you veer away. What minimum speed must you have as you reach the ramp in order for her to live to do this again tomorrow? 2. Relevant equations U=mgh, K=0.5mv^2, W=Fd 3. The attempt at a solution when the water skier is standing on the ramp, there is only gravitational potential energy Ei=U=m*2m*g then, when I am pull the water skier, there are kinetic energy and work by pulling the water skier Ef=K+W=0.5mv^2+5F, F=mg because the skier is skiing on water thus, Ei+Ef= m*g*2=0.5mv^2+5mg= g(h-d)=0.5v^2 I get v=7.7m/s I am not sure this is the right answer or not.