Soccer Assessment PDF

Name: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Period : \_\_\_\_\_\_\_\_ **Soccer Assessment** Soccer is becoming more and more popular in the United States. And while other soccer-related injuries are happening less frequently, youth soccer players in the United States are experienci...

Name: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Period : \_\_\_\_\_\_\_\_ **Soccer Assessment** Soccer is becoming more and more popular in the United States. And while other soccer-related injuries are happening less frequently, youth soccer players in the United States are experiencing more concussions. ***A concussion is a type of traumatic brain injury caused by the head experiencing*** ***an impact and moving quickly back and forth, causing the brain to bounce around in the skull.*** A concussion can result from a force of 400 - 1,000 N on the head. There has been debate in different sports about how to best prevent concussions. In soccer, one idea is to ban **headers *(when a player hits a soccer ball with their head)*** in youth and professional soccer. **1a) *How would the forces from a header with such a light soccer ball cause a concussion?*** - Draw two free body diagrams showing how the amount of peak force on the head would compare to the [amount of peak force on a soccer ball during a header]. *(Hint : Think about what symbol(s) and labels you might use to show force)* **There are three examples of collisions that tend to happen frequently in soccer:** a. headers (player hits ball with head), (b) collisions between players' heads, and (c) a player's head hitting the ground. ***2a) How would the amount of force on the head compare to the amount of force on the object it collides with in each system : A (with a soccer ball), B (head hits head), and C (head hits ground)?** Circle the letter you agree with below.* A. In every collision, the peak force on the head would be the same as the peak force on the other object in the collision. B. In some, but not all collisions, the peak force on the head would be the same as the peak force on the other object in the collision. C. In every collision, the peak force on the head would be different than the peak force on the other object in the collision. ***2b) Explain in words or pictures your choice in 2a.*** - What factors affect contact forces? - What must happen for a contact force to be present? ***3a) For each of the three examples of collisions (A, B and C) -- Circle where Kinetic Energy is occurring.***  ***3b) Considering both objects that are about to collide in each interaction, which system would you predict to have the least amount of total kinetic energy in the system right before the objects collide?** Circle answer you agree with below.* A. Player \#8 running at 7 mph and heading the soccer ball that was kicked by another player. B. Player \#8 running at 7 mph and colliding with another running player running towards them. C. Player \#8 at 7 mph running and hitting the ground. ***3c)** Explain using labels, symbols and pictures. **Why the system you chose in 3b would have the least amount of total kinetic energy before the collision by comparing it with the two other systems.*** ***Should include :** What is moving, what is not at time of collision? Amount (higher, lower, or same) of Kinetic Energy (KE).* **4)** Using complete sentences, briefly summarize your answer to 3b. **Which system should have the least amount of peak forces during the collision? Why?** **\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\ \ \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\ \ \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\ \ \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\ ** 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