wind resistance, and gravity, mass does not in any way contribute to how an object falls.
The force of gravity will affect the rate of falling in air. As will the aerodynamic shape of the object. And assuming that the air is not moving with or against the direction of fall.
The shape of an object affects the wind resistance that will press against the object, slowing it as it falls.
Only the object's mass.
What are the two factors that affect an objects kinetic energy
In air, yes. In vacuum, no.
Work is done when an object moves in the direction in which a force is applied to it. So the factors are the magnitude and direction of the applied force and the factors which affect the object's motion. The latter will include the mass of the object and friction (including drag).
[object Object]
force, mass
force and speed
When an object falls down.When an object falls down.When an object falls down.When an object falls down.
Mass of the first object, mass of the second object, distance between the objects.
Only if it's falling through air. If it's just the falling object and gravity, then no.