問題詳情

53. A 29.5-kg boy standing still on a frictionless surface catches a 500-g dodgeball with velocity

=(20.0 m/s)

. What is the total energy loss of the system(the boy and the dodgeball)?
(A) 16.7 J
(B) 48.0 J
(C) 98.3 J
(D) 67.6 J
(E) Not enough information

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增