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物理
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(1)20m/s=______km/h;(2)108km/h=______m/s
人气:275 ℃ 时间:2019-08-19 03:09:56
解答
∵1m/s=
1×
10
−3
km
1
3600
h
=3.6km/h,
∴(1)20m/s=20×3.6km/h=72km/h;
(2)108km/h=
108
3.6
m/s=30m/s;
故答案为:72、30.
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