System Open or Closed
System Open or Closed#
Two buss collide on a track. Bus A comes up behind bus B and runs into it. Bus A has mass of 139 kg, bus B has mass of 323 kg. The following graph shows the velocity of each bus 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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