Helmets to Prevent Concussions. In contact sports such as American football, hockey, and rugby, players routinely experience collisions in which considerable contact is made with the head, and therefore the brain can be subjected to significant forces. Repetitive collisions in which the brain experiences accelerations of 10 times the acceleration due to gravity (ie, 10g) or greater can result in accumulative permanent brain damage. With current helmet design, the effective stopping distance for a football player undergoing a head-to-head collision with an initial speed of 8.00 mph is 2.25 inches. (a) What is the average magnitude of the acceleration during the collision (in terms of g)? Is it a safe value? (b) The effective stopping distance can be increased by adding better cushioning features. You and your team are assigned to determine the increase in the effective stopping distance required for a new helmet design that will result in an effective average acceleration of less than 10.0g (with an initial speed of 8.00 mph), thereby Th effects of head contact.

Helmets to Prevent Concussions. In contact sports such as American football, hockey, and rugby, players routinely experience collisions in which considerable contact is made with the head, and therefore the brain can be subjected to significant forces. Repetitive collisions in which the brain experiences accelerations of 10 times the acceleration due to gravity (ie, 10g) or greater can result in accumulative permanent brain damage. With current helmet design, the effective stopping distance for a football player undergoing a head-to-head collision with an initial speed of 8.00 mph is 2.25 inches. (a) What is the average magnitude of the acceleration during the collision (in terms of g)? Is it a safe value? (b) The effective stopping distance can be increased by adding better cushioning features. You and your team are assigned to determine the increase in the effective stopping distance required for a new helmet design that will result in an effective average acceleration of less than 10.0g (with an initial speed of 8.00 mph), thereby Th effects of head contact.

Name: Helmets to Prevent Concussions. In contact sports such as American fo
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College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 32PE: Professional Application: A woodpecker's brain is specially protected from large decelerations by...

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Professional Application: A woodpecker's brain is specially protected from large decelerations by tendon-like attachments inside the skull. While pecking on a tree, the woodpecker's head comes to a stop from an initial velocity of 0.600 m/s in a distance of only 2.00 mm. (a) Find the acceleration in m/s2 and in multiples of g(g=9.80m/s2). (b) Calculate the stopping time. (c) The tendons cradling the brain stretch, making its stopping distance 4.50 mm (greater than the head and, hence, less deceleration of the brain). What is the brain's deceleration, expressed in multiples of g?
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