That’s Why They Wear Helmets
A human skull can withstand 100 kPa before fracturing. A baseball, with an impact area 0.003 m2 and a weight of 0.15 kg, is launched from a pitching machine, a distance of 20 meters, towards a skull. How long would it take for the baseball to travel if the skull was cracked?
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Photo attributed to ScientificRelevance.