AP® Physics 1 & 2

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Momentum of the Center of Mass: Panda on a Ramp


A sleeping panda is placed gently on a frictionless ramp ​and then slides down the ramp as shown. The ramp sits on a frictionless floor so that the ramp slides along the floor as the panda slides down the ramp.

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What direction does the center of mass for the panda+ramp system move as the panda is sliding down the ramp?


The center of mass doesn't move.


The center of mass moves down only.


The center of mass moves down and to the left.


The center of mass moves to the left only.