I have to create my own physics question for homework which combines momentum/collisions with another unit (I chose forces/friction). Then I have to solve it. 1. The problem statement, all variables and given/known data Lewis Hamilton is testing his new McLaren when suddenly he misses the pitlane break point and crashes into Kimi Raikkonen's Ferrari at 280 km/h. If Kimi was driving at 50km/h and the impact lasts for 0.3s and the coefficiant of friction is 0.3: A) How far does each car slide? B) Supposing that humans cannot survive over 80Gs, do either one of the drivers survive? 2. Relevant equations impulse p=p` F=ma 3. The attempt at a solution 280km/h = 77.7 m/s 50kkm/h = 13.9 m/s m1v1 + m2v2 = m1v1` + m2v2` 605(77.7) + 605(13.9) = 605(v1`) + 605(v2`) V1` = 91.6 - V2` v1 - v2 = v2` - v1` 77.7 - 13.9 = v2` - (91.6 - v2`) V2` = 77.7 m/s v1` = 13.9 m/s //KIMI RAIKKONEN SLIDE vf^2 - vi^2 = 2(a)(s) a = -Ff / m a = -ug a = 0.3(9.8) = -2.94 0^2 - (77.7)^2 = 2(-2.94)(s) s = 1026.75m //LEWIS HAMILTON SLIDE vf^2 - vi^2 = 2(a)(s) a = -Ff / m a = -ug a = 0.3(9.8) = -2.94 0^2 - (13.9)^2 = 2(-2.94)(s) s = 32.85m //G FORCE FOR LEWIS HAMILTON v1 = 605(77.7) = 47008.5 v1` = 605(13.9) = 8409.5 change in momentum = v1 - v1` = 38599 38599 = F * t 38599 = F * 0.3 F = 128663 G force = F / 9.8 = 13128.9 //G FORCE FOR KIMI RAIKKONEN v1 = 605(13.9) = 8409.5 v1` = 605(77.7) = 47008.5 change in momentum = v1 - v1` = -38599 -38599 = F * t -38599 = F * 0.3 F = -128663 G force = F / 9.8 = -13128.9 Okay! Now the thing is, those G forces looks REALLY high. I mean obviously the crash is going to produce a big number but I was guessing it would be between 75-200. Right now as you can see it's in the thousands. Did I miss something? P.S. I realize that this is obviously missing like a million real-world factors but it's for a high school physics class so no need to make it excessive with stuff we have not learned yet. Thanks!!