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Choose which statement describes a process in
which an external force does positive work on
the system. Wonder Woman is not part of the
system.
O
O
O
O
Wonder Woman carries a 1000 lb bag
down the hallway to physics class. The
system is the bag.
Wonder Woman stops a speeding train.
The system is the train.
Wonder Woman moves a parked car. The
system is the car.
Wonder Woman lowers a cat stuck in a
tree to the ground. The system is the cat
and Earth.

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