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abdul_shabeer

A bullet of mass A and velocity B is fired into a block of wood of mass C. If loss of any mass and friction be neglected, the velocity of the system must be______

  • 2 years ago
  • 2 years ago

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  1. asnaseer
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    use conservation of momentum

    • 2 years ago
  2. abdul_shabeer
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    (a) AB/(A+C) (b) (A+C)/(B+C) (C) AC/(B+C) (D) (A+B)/AC

    • 2 years ago
  3. asnaseer
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    what is the momentum before the collision?

    • 2 years ago
  4. asnaseer
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    do you know how to calculate momentum?

    • 2 years ago
  5. abdul_shabeer
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    AB

    • 2 years ago
  6. asnaseer
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    correct - now what is the momentum after the collision - call the velocity of the system after the collision V

    • 2 years ago
  7. jimmyrep
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    yep

    • 2 years ago
  8. abdul_shabeer
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    V(A+C)

    • 2 years ago
  9. asnaseer
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    correct - now just equate the two and solve for V

    • 2 years ago
  10. jimmyrep
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    right again

    • 2 years ago
  11. asnaseer
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    momentum before collision = momentum after collision

    • 2 years ago
  12. abdul_shabeer
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    Thanks a lot

    • 2 years ago
  13. asnaseer
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    yw

    • 2 years ago
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