I'm not sure what the rules are about posting homework problems, but I just had 2 I couldn't get around too, so here's the second one... 1. The problem statement, all variables and given/known data A 40 kg girl and a 8.4 kg sled are on the frictionless ice of a frozen lake, 15m apart but connected by a rope of negligible mass. The girl exerts a horizontal 5.2 N force on the rope. What are the acceleration magnitudes of (a) the sledge? (b) the girl? (c) How far from the girl's initial position do they meet? 2. Relevant equations f=ma 3. The attempt at a solution Finding the answers to part a and b were simple.. (a) a = f/m = 5.2N/8.4kg = .62 m/s2 (b) a = f/m = 5.2N/40kg = .13 m/s2 (c) I'm having problems figuring out part C.