Recent content by totentanz777

  1. T

    Kinetic energy: what percentage has been lost?

    Homework Statement So there's a particle of mass 4u that strikes another particle of mass 196u. The collision is elastic. What percentage of its original kinetic energy has the moving particle lost? Homework Equations m1v1o + m2v2o = m1vf + m2v2f K1o + K2o = K1f + K2f The Attempt...