When the entire group of forces acting on an object is balanced, the object's
motion is 'uniform' ... its speed is constant and it moves in a straight line. If
its speed is changing or its path is not straight, that's called "acceleration",
and it means that the group of forces acting on the object is not balanced.
If the object doesn't move, the forces HAVE TO be balanced. There is no other way.
Forces that likely act upon a moving object include:frictiongravity
If forces on an object are balanced, the object will not accelerate - i.e., its velocity won't change.
Then the object will move :) If you are talking about a car, and you have the brakes on, then it will be balanced because the brakes act as a balancing force.Scientifically, the only thing that makes a car move without any kind of brake on is because of unbalanced forces.
Then the result will be the same as if NO forces act on the object (since the sum of the forces is zero). The object will continue moving in a straight line, at constant speed.
Yes.
Sure. If all of the forces on an object are balanced, then the object continues moving in a straight line at constant speed. All of the forces on an airplane cruising in level flight, or on a car on cruise-control on a straight piece of road, are balanced.
If forces on an object are unbalanced, the object will accelerate or decelerate. If forces on an object are balanced, the object will stay still or keep moving with the same velocity.
Sure. If all of the forces on an object are balanced, then the object continues moving in a straight line at constant speed. All of the forces on an airplane cruising in level flight, or on a car on cruise-control on a straight piece of road, are balanced.
If the object doesn't move, the forces HAVE TO be balanced. There is no other way.
When the forces on an object are balanced, then they have the same effect on itas NO FORCE at all would have. That means that the object does not accelerate,and THAT means that it continues moving in a straight line, at a constant speed.If that didn't blow your mind, then please read it again. One of the things it tells usis that it doesn't take ANY FORCE to keep an object moving.
Forces that likely act upon a moving object include:frictiongravity
If forces on an object are balanced, the object will not accelerate - i.e., its velocity won't change.
balanced Forces
Then the object will move :) If you are talking about a car, and you have the brakes on, then it will be balanced because the brakes act as a balancing force.Scientifically, the only thing that makes a car move without any kind of brake on is because of unbalanced forces.
Inertia
"Action and reaction" refers to Newton's Third Law. Forces always come in pairs; if object "A" pushes against object "B", then object "B" will push back against object "A". Which of these two forces is called the "action", and which the "reaction", is often arbitrary."Balanced forces" is unrelated to the above; when forces are "balanced", it means that the vector sum of all the forces that act on the same object are zero. Please note that "action and reaction" forces are forces that act on different objects, so the forces on a single object are not necessarily balanced.