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Thread: Mass in free space.

  1. 08-01-2011, 11:15 PM #1
    gsalih
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    Mass in free space.

    Why does mass need an external force to move in free space?
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  2. 08-01-2011, 11:48 PM #2
    zeke
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    Ask Newton.
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  3. 08-02-2011, 07:52 AM #3
    jboggs
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    A mass will continue to move in the same direction at the same speed unless affected by an outside force, even if that speed is zero.
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