A.![]() | B.![]() | C.![]() | D.![]() |
B2L2v |
R |
B2L2v |
R |
A.只有0s<t<1s | B.只有2s<t<3s |
C.0s<t<1s和2s<t<3s | D.0s<t<1s和3s<t<4s |
A.![]() | B.![]() | C.![]() | D.![]() |
. |
v |
A.0~t2;
| B.t1~t2;
| ||||||||
C.t1~t2;
| D.t1~t2;
|
A.![]() | B.![]() | C.![]() | D.![]() |
A.从t=4.0s到t=6.0的时间内物体做匀减速直线运动 |
B.物体在t=10.0s时的速度大小约为5.8m/s |
C.物体在t=12.0s时受到的合外力为0.5N |
D.在t=8.0s到t=12.0s的时间内物体做匀速运动 |
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