S3: Suppose you are watching an ice-hockey game. As the puck is sliding across the ice at a relatively constant speed, it passes close to a player who hits it (with his stick) in the same direction as it is already moving. After the hit, you notice that the puck is moving much faster than it was before the hit. Use your ideas about forces to write a scientific explanation for why the puck's speed is greater after the hit than it was before. Explanation: Why was the puck moving faster after being hit? Describe the situation using a diagram: (Draw a force diagram for the puck during the interaction that made the speed change. Remember to include speed and force arrows and label them as you think appropriate.) Write the narrative: (Use ideas about forces to connect the increase in speed to the force acting on the puck during the hit.)
S3: Suppose you are watching an ice-hockey game. As the puck is sliding across the ice at a relatively constant speed, it passes close to a player who hits it (with his stick) in the same direction as it is already moving. After the hit, you notice that the puck is moving much faster than it was before the hit. Use your ideas about forces to write a scientific explanation for why the puck's speed is greater after the hit than it was before. Explanation: Why was the puck moving faster after being hit? Describe the situation using a diagram: (Draw a force diagram for the puck during the interaction that made the speed change. Remember to include speed and force arrows and label them as you think appropriate.) Write the narrative: (Use ideas about forces to connect the increase in speed to the force acting on the puck during the hit.)
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