A ball with a mass of 9kg moving at 15ms hits a still ball with a mass of 2kg. If the first ball stops moving, how fast is the second ball moving?

1 Answer
Feb 10, 2016

v=67,5ms

Explanation:

Pb=Pa sum of momentums before event ,must be equal sum of momentums after event
915+0=0+2v
135=2v
v=1352
v=67,5ms