A 40kg child slides down a frictionless playground slide, starting from rest at a height of 2.2 m. He leaves the bottom of the slide moving horizontally at some velocity(v1). He then immediately lands on a wagon (25kg) which rolls off with the child with velocity (v2). Rolling friction is .07 with the ground. The child's velocity is calculated to be 6.56 m/s and the child and wagon's velocity together is calculated to be 4.04 m/s. What is the distance the two roll to before stopping?