A.-v | B.
| C.
| D.
|
-mv |
(M-m) |
A.甲、乙两物块在弹簧压缩过程中,由于弹力作用,动量不守恒 |
B.当两物块相距最近时,物块甲的速率为零 |
C.当物块甲的速率为1m/s时,物块乙的速率可能为2m/s,也可能为0 |
D.物块甲的速率可能达到5m/s |
A.若m1>
| ||||
B.若m1<
| ||||
C.若m1=
| ||||
D.若m1>
|
A.5m甲=m乙 | B.10m甲=m乙 | C.m甲=m乙 | D.2m甲=m乙 |
A.1m/s | B.2m/s | C.3m/s | D.4m/s |
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