A ball with a mass of #2kg# moving at #6 m/s# hits a still ball with a mass of #9 kg#. If the first ball stops moving, how fast is the second ball moving?
1 Answer
Mar 11, 2017
m1u1+m2u2=v1m1+v2m2
(2)(0)+(9)(0)=(6)(2)+v2(9)
0+0=12+v2(9)
-12=v2(9)
-12/9=v2
-0.1481=v2
