Two girl scouts are sitting in a large canoe on a still lake while at summer camp. The canoe happens to be oriented with the front of the canoe pointing due north. One of the girls is at the front of the canoe and the other is at the back of the canoe. The girl at the front walks to sit next to her friend at the back and sits down. What effect does this event have on the canoe?
1) The canoe will be moving toward the north.
2) The canoe will be moving toward the south.
3) The canoe will still be at rest at its original position.
4) The canoe will still be at rest, but it will be south of its original position.
5) The canoe will still be at rest, but it will be north of its original position.