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Two meteoroids are heading for earth. Their speed as they cross the moon's orbit are 2.3 km/s. The second meteoroid misses for earth by 2680 km. What...

Two meteoroids are heading for earth. Their speed as they cross the moon's orbit are 2.3 km/s. The second meteoroid misses for earth by 2680 km. What is its speed at its closest point?

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