23592 |
23592 |
23592 |
13954 |
9538 |
23592 |
10 |
13954 |
9538 |
10 |
23592 |
23592 |
23592 |
1 |
2 |
v | 21 |
1 |
2 |
1 |
2 |
v | 22 |
A.Ek2=9Ek1,p2=3p1 | B.Ek2=3Ek1,p2=3p1 |
C.Ek2=8Ek1,p2=4p1 | D.Ek2=3Ek1,p2=2p1 |
A.m乙=
| B.m乙=3m甲 | C.m乙=4m甲 | D.m乙=5m甲 |
A.两手同时放开,两车的总动量为0 |
B.先放开右手,后放开左手,两车的总动量向右 |
C.先放开左手,后放开右手,两车的总动量向右 |
D.两手同时放开,两车的总动量守恒,两手放开有先后,两车的总动量不守恒 |
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