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Anyone have any ideas? I have asked multiple friend for help and nobody seems to know how to work this problem. This assignment is due tomorrow. Thank you in advance for any help

Nothing is implied about the second ball being at rest on collision. The problem states that two balls have a head on elastic collision. Ball (a) has a mass of 0.02kg and is moving at 3.0 m/s in the +x. Ball (b) has a mass of 0.035kg and a final velocity of 1.5m/s in the +x. I'm trying to find...

Is it possible to solve for an elastic collision when vb and v'a are the two unknowns? I have been trying for a few hours to solve for either unknown using the conservation of momentum and the conservation of total kinetic energy equations but have come up with nothing. Can anyone help? mava...