Assuming you mean "falling": the main forces are gravity (downward), and friction (in the direction opposite to the object's movement - for example, if the objects falls straight down, that would be upward).
Both.
add
Yes. Forces with identical value but with opposite direction will produce no displacement.
No. It depends on what other forces are acting on the object.
If the forces acting on an object are balanced, then the object will do none of those things. The statement is false.
Net force is a combination of all the foces acting on an object.If two forces are acting in the same direction you add the forces to calculate the net force
Two forces acting in the same direction add together. If those two forces are acting on an object, the object will accelerate faster than if there was only one force acting on the object.
this is the net resultant force acting on the object, taking into account all of the forces acting, their strength and direction.
Equal forces acting on an object in opposite directions are called balanced forces. If they are on the same line of action, they are called couple forces.
The forces acting on a stationary object are balanced. If you were to add up all the forces (taking the directions into account, you would get a total of 0. There are always forces acting on a object, such as gravity, so you cannot say that there are no forces acting on it. You can say that the forces are balanced.
False forces that are equal in size but opposite in direction are called balanced forces. Unbalanced forces acting on an object cause the object to accelerate.
Balanced forces describes when all forces on an object are equal. Unbalanced forces describes when the forces on an object are unequal, resulting in movement. Forces are balanced when the vector sum of all the forces acting on the object is zero, at which point the object will be at rest or be in motion with constant velocity. Forces are unbalanced when the vector sum of all the forces acting on the object is greater or less than zero, at which point the object will accelerate by either starting motion from rest, or changing its motion if it is already in motion, for example, by changing direction or speed.