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A high school physics teacher also happens to he the junior hockey team coach. During a break at practice, the coach asks two players to go to the center of the ice with a lS-m pole. A till-kg player is at one end of the pole and a o-kg player is at the other end. The players then start pulling themselves together by pulling the rod and sliding on the ice as they move along the rod. Wl'IEI'I the two players. meet, what distance will the LEDkg player have moved? Use the concept of the center of mass. A sled of mass m is coasting at a constant velocity on the ice covered surface of a lake. Four birds, with a combined mass 0.75m, gently land at the same time on the sled. The sled and birds continue sliding along the original direction of motion. How does the kinetic energy of the sled and birds compare with the initial kinetic energy of the sled before the birds landed