We all know that the earth goes around the sun. How far does the earth go around the sun in onesecond?A.300 km B.30 km C.3 km要写计算过程

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We all know that the earth goes around the sun. How far does the earth go around the sun in onesecond?A.300 km B.30 km C.3 km要写计算过程
We all know that the earth goes around the sun. How far does the earth go around the sun in one
second?
A.300 km B.30 km C.3 km
要写计算过程

We all know that the earth goes around the sun. How far does the earth go around the sun in onesecond?A.300 km B.30 km C.3 km要写计算过程
这道题考的是地球的公转速度:
地球以每秒29.79公里的速度,沿着一个偏心率很小的椭圆(实际上在近日点减速,远日点加速度)绕着太阳公转.1小时=3600秒,那么地球就是每小时以107244公里的速度饶太阳转.
所以选择B.

B。
地球以每秒29.79公里的速度公转。