問題詳情
8. A 10-g bullet moving horizontally with a speed of 2.0 km/s strikes and passes through a 4.0-kg blockmoving with a speed of 4.0 m/s in the opposite direction on a horizontal frictionless surface. If theblock is brought to rest by the collision, what is the kinetic energy of the bullet as it emerges fromthe block?
(A)0.51 kJ
(B) 0.29kJ
(C) 0.80 kJ
(D) 0.13 kJ
(E) 20.0 kJ
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增