Yes, an unbalanced force is needed to change the motion of an object.
If an unbalanced force does not act on an object it will continue to maintain its state of motion (either in motion or at rest), not considering the effect of frictional force. This is basically Newtons first law of motion.
what changes can be pauduced by a
force
It takes a force to change velocity.
kinetic frictional
Yes
speed
If you apply force to an object, you accelerate it. If you apply the force in the direction that the object is moving, you speed it up. If you apply it in the opposite direction, you slow it down. If you apply the force in another direction than the object is moving in you will change the direction of the objects motion. The amount of acceleration is given by a = F/m where a is acceleration, F is force and m is the mass of the object.
Yes, a force can cause an object to move, or to change its speed or direction. A net force that is non-zero is one that acts in this manner, and it represents the "sum" of the forces acting on an object. If the net force on an object is not zero, it is some number, and this represents a force that will act on an object to accelerate it.
. The amount of Force needed to make an object change its motion depends on the Mass of the object and the Force required
force
force
force
An object in motion stays in motion because it requires a force to change the motion. No force, no change.
A force.
A net force from something outside of the system.
It takes no force to 'move' an object. There are trillions of objects that are moving right now with no forces acting on them. It only takes force to 'accelerate' an object ... to change its motion, by changing its speed or the direction of its motion. force=mass*acceleration As mass increases, so does the force needed to change the object's motion.
With changing the "state of motion", I assume you want to change the velocity. What you need here is a force, applied on the object. The amount of acceleration is given by Newton's Second Law.
An unbalanced force.
Force, which causes acceleration
An outside force to act on it