In a tug-of-war contest on a firm, horizontal sandy beach, Team A consists of six players with an average mass of 65 kg and Team B consists of five players with an average mass of 84 kg. Team B, pulling with a force of 3.2 KN, dislodges Team A and then applies good physics principles and pulls on Team A with a force of 2.9 KN, just enough to keep Team A moving at a low constant velocity. Determine Team A's coefficient of (a) Static friction (b) Kinetic friction on sand