A ball with a mass of #4 kg # and velocity of #3 m/s# collides with a second ball with a mass of #5 kg# and velocity of #- 1 m/s#. If #20%# of the kinetic energy is lost, what are the final velocities of the balls?
1 Answer
The final velocities are
Explanation:
We have conservation of momentum
The kinetic energy is
Therefore,
and
Solving for
Solving this quadratic equation in