A ball with a mass of #8 kg# moving at #14 m/s# hits a still ball with a mass of #2 kg#. If the first ball stops moving, how fast is the second ball moving?
1 Answer
Dec 26, 2015
56m/s.
Explanation:
We need to consider here the conservation of linear momentum. The law of conservation of linear momentum states that the total momentum of an isolated system is conserved, i.e.,
where
For a perfectly inelastic collision, as is in the current problem,
Therefore, we have,
Thus, given that