問題詳情
4. An air-bag company is designing a new product. The specification requires passengers of mass75 kg to sit in a car traveling at 60 km/h. When the car hits the wall and stops there, the air-bagextends the stopping time up to 0.4 s. What is the average force on the passenger during thiscollision?
(A) 408 N
(B) 1680 N
(C) 3125 N
(D) 11259 N
(E) 30625 N
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
用户評論
【用戶】面試倒楣鬼-22幸運上後西
【年級】大一下
【評論內容】F = P/time P = mv = 75kg * 60 km/h = 75* 16.6 = 1250注意時速通常要換為秒速去計算F = 1250/0.4 = 3125 (C)
【用戶】面試倒楣鬼-22幸運上後西
【年級】大一下
【評論內容】F = P/time P = mv = 75kg * 60 km/h = 75* 16.6 = 1250注意時速通常要換為秒速去計算F = 1250/0.4 = 3125 (C)