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Physics(Please check thanks)

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Two vectors have magnitudes 4m and 3m. Which choice is not a possible magnitude for their resultant?

3m, 1m, 7m, 12m

I chose 12m. Is this correct?

  • Physics(Please check thanks) -

    Correct, this follows from the triangle inequality. For two vectors x, and y, you have:

    |x+y| <= |x| + |y|

  • Physics(Please check thanks) -

    Thank you!

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