2 |
A.(
| B.(
| C.(
| D.1s |
2 |
2 |
2 |
2 |
2 |
A.37.5m | B.40m | C.35m | D.50m |
A.48m | B.12m | C.12.5m | D.0 |
A.1:1 | B.5:9 | C.5:8 | D.3:4 |
A.(1)(3) | B.(2)(3) | C.(2)(4) | D.(1)(2) |
A.若a2>a1,两物体一定会相遇 |
B.若a2<a1,两物体一定不会相遇 |
C.若v2>v1,两物体一定会相遇 |
D.若v2<v1,两物体一定会不相遇 |
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