A student, beginning from rest, slides down a water slide. On the way down, the kinetic frictional force (a non-conservative force) acts on her. The student consists of a mass of 67.0 kg, and the height of the water slide is 12.7 m. When the kinetic frictional force does -5.80 x 103 J of work, determine how fast the student is going at the bottom of the slide?