阿摩線上測驗
32. A bullet of mass m traveling at speed v strikes a block of mass M, initially at rest, and is embedded in it as shown below. How far will the block with the bullet embedded in it slide on a rough horizontal surface of coefficient of kinetic friction μk before it comes to rest?
(A)
(B) 
(C) 
(D)
(E)
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統計： A(3), B(1), C(2), D(5), E(61) #2356593
統計： A(3), B(1), C(2), D(5), E(61) #2356593
詳解 (共 2 筆)
艾爾
#4744435
兩物合體只剩質心動能
非保守做功為力學能變化 沒位能變化 就是動能變化 uk(m+M)g x S=1/2(m+M)(mv/m+M)^2
可得S
2
0