http://wiki.answers.com/Q/If_there_is_a_change_in_motion_the_forces_are_equal" No, not equal
Forces that are equal in magnitude, opposite in direction and acting on the same object will not create a change in said objects motion.
Two forces result in no motion when they are equal in magnitude and opposite in direction. This creates a state of equilibrium where the forces cancel each other out, resulting in no net force acting on an object to cause motion.
When the forces acting on an object are balanced, there is no change in the object's motion. These forces can include gravitational force, normal force, frictional force, and tension in a string. Forces are vectors, so they can cancel each other out when they are equal in magnitude and opposite in direction.
Forces that result in no change in an object's motion balanced forces.
Applying balanced forces to an object means the forces are equal in size and opposite in direction, resulting in no change in the object's motion. Applying unbalanced forces means the forces are unequal, leading to a change in the object's motion, such as acceleration or deceleration.
Some forces that do not cancel out or change an object's motion include net external forces, such as applied forces, frictional forces, and gravitational forces. These forces can cause changes in an object's motion, such as accelerating or decelerating it.
Balanced forces are forces that are balanced and there is no change in motion. Unblanced forces are the opposite of a balanced force. that means that unbalanced forces are not balanced and there is a change in motion.
Unbalanced forces are two or more forces that are not equal in magnitude and opposite in direction, resulting in a change in the motion of an object. The net force produced by unbalanced forces causes the object to accelerate in the direction of the resultant force.
The action and reaction forces are the forces that cancel each other. They do not change an object motion or cause the object to accelerate.
During motion, the only two equal forces that can cancel each other without altering the motion of the object are normal and gravity, they are opposite to each other but the same. Also if Fa/T is equal to Friction, then the forces are balanced.
When the net forces are equal to 0 N, the forces are said to be balanced. This means that the individual forces acting on an object cancel each other out, resulting in no acceleration or change in motion.
Forces that are equal in size but opposite in direction are called balanced forces.