Cassy shoots a large marble (Marble A, mass: 0.06 kg) at a smaller marble (Marble B, mass: 0.03 kg) that is sitting still. Marble A was initially moving at a velocity of 0.7 m/s, but after the collision it has a velocity of –0.2 m/s. What is the resulting velocity of marble B after the collision? Be sure to show your work for solving this problem along with the final answer.

Question

anonymous · Answer

total momentum of system should be conservative
so Ma*Va=total momentum
 so  0.06*0.7=0.0042
after sollison
 0.06*-0.2=-0.0012
so 0.0042-0.0012=0.003 is momentum of marbel B
so its velocity= 0.003/0.03

anonymous · Answer

so i would divide 0.003/0.03 for my answer

anonymous · Answer

no it would be
1m/s

anonymous · Answer

yea u divided to get that right ?