Physics Problem? Must Find Kinetic Energy?

Neville Longbottom was dared by his friends to go down Suicide Hill, but at point P he gets a little nervous. From point P to Q he drags a foot and creates some friction, so μk=0.12. Suppose the distance from P to Q is a horizontal 10.8 meters, Neville's m is 30.2 kg and he has KEP=2591 Joules of kinetic energy at point P. Find his kinetic energy at point Q (KEQ).