Ofcourse it is.
Nothing
it could speed up or slow down, it depends which force is bigger and which direction the force is pushing/pulling etc.
the pin going into the board because the area of the tip is much smaller so theres more force
pushing
Air planes are affected by gravity too, just like everything else. What makes them fly is that the upward force of the wings is bigger than the downward force of gravity.
Pushing.
A surface pushing up, equal and opposite to a force pushing against it
Pushing requires energy
yes..
field force
A force is pushing or pulling on something.
The object floats