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physics emegency!

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A 16 kg object with a velocity 7.5 m/s explodes into two equal fragments. One flies off with a velocity 2.5i -2.5j m/s.
What is the velocity of the other fragment in vector notation?

  • physics emegency! -

    Momentum is conserved. With two masses, the second mass velocity must be the negative of the first.

    V=-(2.5i-2.5j)

  • physics emegency! -

    so the 7.5 is irrelevant ?

  • physics emegency! -

    dis is rong

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