During a car crash a 65 kg person’s head goes from travelling at 50 km h−1 to stationary in 0.15 s. (a) What is the magnitude of the average net force acting on the head of a person with a 4.5 kg head? (b) How does this compare with the weight force acting on the person

Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter2: Newtonian Mechanics-single Particle
Section: Chapter Questions
Problem 2.37P: A particle of mass m has speed υ = α/x, where x is its displacement. Find the force F(x)...
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During a car crash a 65 kg person’s head goes from travelling at 50 km h−1 to stationary in 0.15 s.

(a) What is the magnitude of the average net force acting on the head of a person with a 4.5 kg head?

(b) How does this compare with the weight force acting on the person?

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