Every time a force is applied to an object, the object will exert a _____________ force that is _______ to the initial force in the opposite direction.
Every time a force is applied to an object, the object will exert a **reactive** force that is **equal** to the initial force in the opposite direction.
This concept is described by Newton's third law of motion, which states: For every action, there is an equal and opposite reaction. This means that for any force there is a reaction force that is equal in size, but opposite in direction. If you push on a wall, the wall pushes back on you with an equal force in the opposite direction.