System Open or Closed#
Two cars collide on a track. Car A comes up behind car B and runs into it. Car A has mass of kg, car B has mass of kg. The following graph shows the velocity of each car as a function of time.
Is the system isolated? Why or why not?
Yes, because the two carts are on a track with no friction.
Yes, because their change in velocities are the same.
No, because the total momentum is nonzero.
No, because the momentum is not conserved
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