Yes. For instance, say a box is sliding at me at some speed. I push back with a force of 25N directly against the path of the box. Suppose that I stop the box after it goes 25m. So, I pushed against the box, or in the negative direction. The displacement was in the positive direction. So, if W=Fs and -25N=F and s=25m, W=Fs=-25N*25m=-625J.
A moving object may, or may not have a force acting on it. It takes some kind of force to cause an object to move to begin with, but if it is already in motion, it may not have any force acting on it any more. The object's inertia would be keeping it moving. There does not have to be a force acting on an object if it is moving. A small chunk of rock gliding along in deep space is just "coasting" through the nearly perfect vacuum of the region. It really isn't being acted on by anything because there really isn't that much there to create a force to act on that rock.
If an unbalanced force was not acting upon it, it wouldn't be moving in a circle.An object with no unbalanced force will either not be moving, or be moving in a straight line due to Isaac Newtons 1st law of motion.
If you doubled the force on a moving object you would double its acceleration.
The object will experience acceleration in the direction of the force.
Because F=ma, If an object is moving at a constant velocity(speed), then there can be no net force acting on the object. This means that there is a dispersive force i.e Drag or friction acting on the object equal to 2 but in the opposite direction to motion.
If the force acting upon an object are balanced then the object must not be accelerating
An object is free falling when the only force acting on the object is gravity.
There would have to be an unbalanced force put an object in motion but once in motion no force is necessary for it to remain in motion
The condition for an object to stay at rest or if moving, keep moving at a constantvelocity is that the sum of forces acting on the object be zero or that no force actson the object.For an object to increase its velocity, in other words to accelerate, there has to bea force acting on the object. The force is the one responsible for the accelerationof the object. Recall Newton's 2nd law of motion:F = m∙awhere 'F' is the force acting on the object with mass 'm', and 'a' is the acceleration the object experiences.Read more: What_are_the_conditions_for_an_object_to_stay_at_rest_to_keep_moving_at_constant_velocity_or_to_move_with_increasing_to_velocity
Friction
Friction
friction is nothing but just the opposite force acting on any moving object...... it hence decreases the speed of a moving object as the object is obstructed in its path
The condition for an object to stay at rest or if moving, moving at a constant velocity is that the sum of forces acting on the object be zero or that no force acts on the object.