• Clarence
Consider two balls of identical mass. If ball 1 is moving to the right towards stationary ball 2 at 1.0 m/s and the two balls collide elastically, what will the final velocities of both balls be? Wouldn't both balls just move in the right direction at 1.0m/s? Potentially attached to one another?
  • Stacey Warren - Expert
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  • schrodinger
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  • IrishBoy123
yoi need to dredge through the energy ad momentum equations to work these out - ie equating total momentum and kinetic energy before collision with total momentum and kinetic energy before collision but this can be a very handy shortcut or at least a change of scene. \(C_R\) is the coefficient of resititution and it equals 1 in an elastic collision |dw:1442308533188:dw|
  • IrishBoy123
  • IrishBoy123
although there isn't so much to do here as the masses are equal and the second ball is stationary before the collision |dw:1442310011254:dw|

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