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12 Nov 2019

# Item: Given the following information: Typical bone fracture force: 90KN 50% fatal on head acceleration if 150 g for 4ms & 50g for 60ms 50% fatal if whole-body pressure exceeds 3.4 Times 10 exp 5 N/meter squared Steering column distance = 0.3 m Front surface area of whole-body = 0.8 meters squared Head and chest surface area = 0.5 meters squared Consider a 75-kg passenger not wearing a seat belt traveling at 27m/s (60mph) who comes to test in 0.010 seconds (car hits a brick wall) after striking an unpadded dashboard Calculate the average force of impact. a = v - vt/t = 0.27 m/s/0.010 s, -1700 m/s2 F = ma = (75 kg)(2700 m/s2) = 202 500 N Calculate the average acceleration in units of (How many "g""gamma) a = 2700m/s2 = (1700 m/s2/1)(16/9.8m/s2) = 275.51 g Calculate the average pressure if head and chest, hit dashboard. P = F/A = 202500 N/0.5m2 = 405000 n/m2 = 40.5 Times n/m2 Identify scientific language, concepts, assumptions. and processes. Demonstrate knowledge of scientific methods and reasoning in science. Analyze and interpret scientific evidence Determine when scientific information supports a given conclusion Demonstrate knowledge of the impact of scientific discovery on human thought and society. Now. using satisfying all of the 5 objectives above, explain the likely outcome of the passenger.

Item: Given the following information: Typical bone fracture force: 90KN 50% fatal on head acceleration if 150 g for 4ms & 50g for 60ms 50% fatal if whole-body pressure exceeds 3.4 Times 10 exp 5 N/meter squared Steering column distance = 0.3 m Front surface area of whole-body = 0.8 meters squared Head and chest surface area = 0.5 meters squared Consider a 75-kg passenger not wearing a seat belt traveling at 27m/s (60mph) who comes to test in 0.010 seconds (car hits a brick wall) after striking an unpadded dashboard Calculate the average force of impact. a = v - vt/t = 0.27 m/s/0.010 s, -1700 m/s2 F = ma = (75 kg)(2700 m/s2) = 202 500 N Calculate the average acceleration in units of (How many "g""gamma) a = 2700m/s2 = (1700 m/s2/1)(16/9.8m/s2) = 275.51 g Calculate the average pressure if head and chest, hit dashboard. P = F/A = 202500 N/0.5m2 = 405000 n/m2 = 40.5 Times n/m2 Identify scientific language, concepts, assumptions. and processes. Demonstrate knowledge of scientific methods and reasoning in science. Analyze and interpret scientific evidence Determine when scientific information supports a given conclusion Demonstrate knowledge of the impact of scientific discovery on human thought and society. Now. using satisfying all of the 5 objectives above, explain the likely outcome of the passenger.