Recent content by kellyxx

  1. kellyxx

    Boy drops a box on ice: momentum conservation

    hmmm I guess there isn't any.
  2. kellyxx

    Boy drops a box on ice: momentum conservation

    The question didn't mention about that, but from my understanding, the velocity of the box after the drop should be 0ms-1
  3. kellyxx

    Boy drops a box on ice: momentum conservation

    Homework Statement A boy is holding a box and moving at a constant velocity of 2m/s on ice. The masses of the boy and the box are 40kg and 2kg respectively.Then the boy drops the box. What is the momentum of the boy just after dropping the box? Assume that the friction between the boy and the...
  4. kellyxx

    What are the top high school science subjects?

    Hi I'm Kelly from Leeds! I am a high school student studying physics, chemistry and biology:smile: Nice to meet you allx
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