C5_presentation - (C5T.5 Two magnetic hockey pucks sliding...

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(C5T.5) Two magnetic hockey pucks sliding on a flat plane of frictionless ice attract each other, changing each other’s direction of motion as they pass. We can (or cannot) realistically apply conservation of momentum to this situation because (A) the system of interest floats in space . (B) the pucks are a functionally isolated system. (C) we can treat the interaction as a collision . (D) Conservation of momentum does not apply here.
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2. (C5T.4) Two football players run into each other at midfield. We can (or cannot) realistically apply conservation of momentum to calculate the players’ velocities just after the impact because (A) the system of interest floats in space . (B) the pucks are a functionally isolated system. (C) we can treat the interaction as a collision . (D) Conservation of momentum does not apply here.
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(C5B.6) Two hockey pucks, one with mass m and one with mass 3 m , slide on a flat, frictionless plane of ice. Originally the lighter puck is sliding westward at a speed of 2 m/s, while the other is sliding eastward at a speed of 1 m/s. The pucks collide and stick together.
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