When an object is moved from rest at a point A to rest atpoint B in a gravitational field, the net work done by thefield depends on the mass of the object and

1. the velocity of the object as it moves between A andB
2. the positions of A and B
3. both the positions of A and B and the pathtaken between them
4. the path taken between A and B only
5. the nature of the external force moving the object fromA to B