試題詳解

34. A police crime lab is trying to determine whether someone was murdered or died as a result of an accident. The victim was struck in the temple by a 4 kg sculpture that is alleged to have fallen off a bookcase. The sculpture presumably fell a distance of 20 m and the corner that struck him had an area of 0.25 cm2 . If the time for the sculpture to stop was 1 ms, the pressure on his temple, in N/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