1. Identify whether the force identified does positive, negative, or zero work in each of the following situations. A hockey player goes onto the ice: 

 

1. Friction acts on a hockey puck sliding across ice. 

 

2. The normal force acts on the hockey puck as it slides across the ice. 

 

3. Gravity acts on a hockey puck as it falls for a face off. 

 

4. A hockey stick acts on the hockey puck as a player makes a shot on goal. 

 

5. The goalie’s glove acts on the hockey puck, stopping it to make a save.