Nothing! If the two forces are equal and opposite then they will cancel each other out. What will happen next is described in Newton's First law when it says "An object in motion will stay in motion unless acted upon by an outside force". Two equal and opposite forces have the same effect as no force, therefore the object's motion will remain the same as if it had never been acted upon by the two opposite forces.
Restate the question: When are acceleration and velocity pointing in the opposite direction?
If you are going forward but slowing down, then the velocity is positive, but the acceleration is negative.
it is a force
Zero
The statement by Newton that for every action there is an opposite by equal reaction is regarded as the third of Newton's laws of motion. This means that in every interaction there is actually a pair of forces acting on the two objects that are equal but work in opposite directions.
When all forces are balanced, the object is either stationairy or moving in one direction inTekkit - Episode 2 a constant speed
Greater force
by subbracting
If this happens then they will get pushed apart. Otherwise nothing really will happen unless there is objects at the end were it is pushing.
The two forces are of the same magnitude, act in opposite directions, and act on different objects.
Assuming the two forces are acting ON THE SAME OBJECT, you can subtract the two forces, to get the net force. Important: This does not apply to Newton's Third Law, since the forces act on DIFFERENT OBJECTS. I mention this because people tend to get this confused.
Pay attention and study
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.
Balanced forces
that are equal and in opposite directions
Presumably, the forces are in opposite directions. In that case, the total force is zero, and there will be no acceleration.
If they are equal in values - nothing. Otherwise, it will move to the same direction as the direction of the greater force.
Forces have directions and can cancel themselves in the netting.
Because the forces are acting on two different objects
divergent bounders or shearing forces