A ball with a mass of #2 kg# moving at #14 m/s# hits a still ball with a mass of #21 kg#. If the first ball stops moving, how fast is the second ball moving? How much kinetic energy was lost as heat in the collision?
1 Answer
Feb 22, 2016
The speed of the second ball is
The kinetic energy lost in as heat was
Explanation:
The momentum is conserved, then
The energy also is conserved
lost in the impact, then