A.30m | B.60m | C.90m | D.120m |
A.25m/s,沿斜面向上 |
B.5m/s , 沿斜面向下 |
C.5m/s, 沿斜面向上 |
D.25m/s,沿斜面向下 |
A.前2 s汽车的位移是8 m |
B.前3 s汽车的位移是16 m |
C.前6 s汽车的位移是25 m |
D.前6 s汽车的位移是24 m |
A.2 m/s2 80 m/s | B.1 m/s2 40 m/s |
C.1 m/s2 80 m/s | D.2 m/s2 40 m/s |
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