题目内容
汽车在平直的高速公路上行驶,1min通过了1800m的路程,汽车的速度是( )
| A.1800m/s | B.108m/s | C.90m/s | D.30m/s |
由题意知t=1min=60s,s=1800m
所以汽车速度v=
=
=30m/s
故选D.
所以汽车速度v=
| s |
| t |
| 1800m |
| 60s |
故选D.
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题目内容
| A.1800m/s | B.108m/s | C.90m/s | D.30m/s |
| s |
| t |
| 1800m |
| 60s |