At the start of a hockey game, the referee drops the puck between two players from opposing teams. Each player wants to push the puck in the opposite direction. For several seconds the puck does not move even though both players are pushing on it with their hockey sticks 1. Identify the forces acting on the puck.
2. Explain why the puck does not move.
3. Describe how one of the players could get the puck to move in a direction she wants.