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17 May, 00:27

When you know both the speed and direction of an objects motion you know the ...

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  1. 17 May, 03:59
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    You know the velocity of the object. Velocity is the vector counterpart to speed, which is a scalar unit.

    Simply put, if you know the magnitude of how fast something is going, you know its speed. if you know both the magnitude AND the direction of that magnitude, you know its velocity.
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