Recent content by kellyxx

  1. kellyxx

    Momentum question -- A boy drops a box while sliding on ice....

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

    Momentum question -- A boy drops a box while sliding on ice....

    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

    Momentum question -- A boy drops a box while sliding on ice....

    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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