問題詳情

34. A police crime lab is trying to determine whether someone was murdered or died as a result of anaccident. The victim was struck in the temple by a 4 kg sculpture that is alleged to have fallen offa bookcase. The sculpture presumably fell a distance of 20 m and the corner that struck him hadan area of 0.25 cm2. If the time for the sculpture to stop was 1 ms, the pressure on his temple, inN/m2, was ______. (Gravitational acceleration g = 10 m/s2)
(A) 3.2 × 105
(B) 1.6 × 106
(C) 3.2 × 106
(D) 1.6 × 109
(E) 3.2 × 109

參考答案

答案:E
難度:計算中-1
書單:沒有書單,新增