While a ship moves toward the right at constant velocity, a seaman atop the mast drops a stone which freely falls to position
1) A.
2) B.
3) C.
This is better understood by realizing that
4) the ship moved to the right a distance equal to that between A and B while the stone fell vertically.
5) the stone was moving to the right just as fast as the ship during the fall.
6) the net force acting on the stone is equal to its weight.
7) because of inertia, the stone experiences a horizontal motion unlike that of the ship.
8) the stone underwent an acceleration while the ship did not.
Answer: 2, 5
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