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Sure! Here is the transcribed text suitable for an educational website: --- 13. **Two 100-kg football players** wearing regulation helmets collide helmet to helmet while each is moving directly at each other at 10.0 m/s and come to a near instantaneous stop. The area of contact at each helmet is 0.06 m², and the helmets are each designed to provide a crumple zone of 0.25 m. What is the maximum stress experienced on each player? (Ans: 4.0 x 10^6 N/m²) 14. **A designer of football helmets** has two options for increasing the safety of helmets but, for economic reasons, can implement only one. One option is to double the area of contact in a helmet-to-helmet collision. The other is to double the crumple distance experienced in a helmet-to-helmet collision. Which will be more effective in reducing the maximum stress? (Hint: solve the previous exercise first.) 15. **A soccer player heads a wet 0.5-kg soccer ball moving directly toward him by striking it with his forehead. Assume the player initially moves his head by 0.05 m to meet the ball.** --- The text is focused on the study of forces and stresses involved in sports collisions, specifically related to football helmet impacts and soccer ball heading.

Sure! Here is the transcribed text suitable for an educational website: --- 13. **Two 100-kg football players** wearing regulation helmets collide helmet to helmet while each is moving directly at each other at 10.0 m/s and come to a near instantaneous stop. The area of contact at each helmet is 0.06 m², and the helmets are each designed to provide a crumple zone of 0.25 m. What is the maximum stress experienced on each player? (Ans: 4.0 x 10^6 N/m²) 14. **A designer of football helmets** has two options for increasing the safety of helmets but, for economic reasons, can implement only one. One option is to double the area of contact in a helmet-to-helmet collision. The other is to double the crumple distance experienced in a helmet-to-helmet collision. Which will be more effective in reducing the maximum stress? (Hint: solve the previous exercise first.) 15. **A soccer player heads a wet 0.5-kg soccer ball moving directly toward him by striking it with his forehead. Assume the player initially moves his head by 0.05 m to meet the ball.** --- The text is focused on the study of forces and stresses involved in sports collisions, specifically related to football helmet impacts and soccer ball heading.

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Sure! Here is the transcribed text suitable for an educational website: --- 13. **Two 100-kg football players** wearing regulation helmets collide helmet to helmet while each is moving directly at each other at 10.0 m/s and come to a near instantaneous stop. The area of contact at each helmet is 0.06 m², and the helmets are each designed to provide a crumple zone of 0.25 m. What is the maximum stress experienced on each player? (Ans: 4.0 x 10^6 N/m²) 14. **A designer of football helmets** has two options for increasing the safety of helmets but, for economic reasons, can implement only one. One option is to double the area of contact in a helmet-to-helmet collision. The other is to double the crumple distance experienced in a helmet-to-helmet collision. Which will be more effective in reducing the maximum stress? (Hint: solve the previous exercise first.) 15. **A soccer player heads a wet 0.5-kg soccer ball moving directly toward him by striking it with his forehead. Assume the player initially moves his head by 0.05 m to meet the ball.** --- The text is focused on the study of forces and stresses involved in sports collisions, specifically related to football helmet impacts and soccer ball heading.
Transcribed Image Text:Sure! Here is the transcribed text suitable for an educational website: --- 13. **Two 100-kg football players** wearing regulation helmets collide helmet to helmet while each is moving directly at each other at 10.0 m/s and come to a near instantaneous stop. The area of contact at each helmet is 0.06 m², and the helmets are each designed to provide a crumple zone of 0.25 m. What is the maximum stress experienced on each player? (Ans: 4.0 x 10^6 N/m²) 14. **A designer of football helmets** has two options for increasing the safety of helmets but, for economic reasons, can implement only one. One option is to double the area of contact in a helmet-to-helmet collision. The other is to double the crumple distance experienced in a helmet-to-helmet collision. Which will be more effective in reducing the maximum stress? (Hint: solve the previous exercise first.) 15. **A soccer player heads a wet 0.5-kg soccer ball moving directly toward him by striking it with his forehead. Assume the player initially moves his head by 0.05 m to meet the ball.** --- The text is focused on the study of forces and stresses involved in sports collisions, specifically related to football helmet impacts and soccer ball heading.
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