A.三个小球落地点的间隔距离L1<L2<L3 |
B.三个小球落地点的间隔距离L1>L2>L3 |
C.三个小球落地点的间隔距离L1=L2=L3 |
D.三个小球落地时间差与车速有关 |
1 |
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6 |
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A.x2-x1=x3-x2,△E1=△E2=△E3 |
B.x2-x1>x3-x2,△E1=△E2=△E3 |
C.x2-x1>x3-x2,△E1<△E2<△E3 |
D.x2-x1<x3-x2,△E1<△E2<△E3 |
A.
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| C.
| D.
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A.1:1 | B.1:2 | C.1:4 | D.2:1 |
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