Question

31. II Your forehead can withstand a force of about 6.0 kN before BIO fracturing, while your cheekbone can withstand only about 3 kN. Suppose a 140 g baseball traveling at 30 m/s strikes your head and stops in 1.5 ms. a. What is the magnitude of the force that stops the baseball? b. What force does the baseball exert on your head? Explain. c. Are you in danger of a fracture if the ball hits you in the fore- head? On the cheek? 75 ka can throw a 500 g rock with a

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m140mAt = 1-msec a) Foree AP /0-12 301 0-140 At 1-5X10 Ad EE2.8 X10 N 2.8 KN Gn the Baseball exerts the force head. Due to action- reachon pair Newtm SaMe force or head also exerts on D-lan) the ball c) Since Atec cheek bone only Austain 0.3KN force 8o it will byeak when ball toikes to it