Work in physics is mathematically defined as force F applied on an object multiplied by the displacement d it covers in the direction of the force. In a system where, a restrictive force exists like friction due to contact between objects or in a field where work done changes into potential energy, displacement is finite.But according to Newtons second law of motion when a force is applied on an object, it produces acceleration in that object which causes a change in velocity in a "certain" time. Moreover when the force has been applied, according to Newtons 1st law of motion it should displace "infinitely" with a constant velocity which is changed due to the force applied. My question here is that what is the real definition of 'displacement' in work formula?

W = F d cosθ

Is the displacement infinite making work infinitely increasing or it is the displacement covered by that object while the force is being applied or when there is acceleration being produced?

Work in physics is mathematically defined as force $F$ applied on an object multiplied by the displacement $d$ it covers in the direction of the force. In a system where, a restrictive force exists like friction due to contact between objects or in a field where work done changes into potential energy, displacement is finite.But according to Newtons second law of motion when a force is applied on an object, it produces acceleration in that object which causes a change in velocity in a "certain" time. Moreover when the force has been applied, according to Newtons 1st law of motion it should displace "infinitely" with a constant velocity which is changed due to the force applied. My question here is that what is the real definition of 'displacement' in work formula?

$$ W = F d \cosθ$$

Is the displacement infinite making work infinitely increasing or it is the displacement covered by that object while the force is being applied or when there is acceleration being produced?

Work in physics is mathematically defined as force "F" applied on an object multiplied by the displacement "d" it covers in the direction of the force. In a system where, a restrictive force exists like friction due to contact between objects or in a field where work done changes into potential energy, displacement is finite.But according to Newtons 2nd law of motion when a force is applied on an object, it produces acceleration in that object which causes a change in velocity in a "certain" time. Moreover when the force has been applied, according to Newtons 1st law of motion it should displace "infinitely" with a constant velocity which is changed due to the force applied. My question here is that what is the real definition of 'displacement' in work formula? W = F d cosθ Is the displacement infinite making work infinitely increasing or it is the displacement covered by that object while the force is being applied or when there is acceleration being produced?

Work in physics is mathematically defined as force F applied on an object multiplied by the displacement d it covers in the direction of the force. In a system where, a restrictive force exists like friction due to contact between objects or in a field where work done changes into potential energy, displacement is finite.But according to Newtons second law of motion when a force is applied on an object, it produces acceleration in that object which causes a change in velocity in a "certain" time. Moreover when the force has been applied, according to Newtons 1st law of motion it should displace "infinitely" with a constant velocity which is changed due to the force applied. My question here is that what is the real definition of 'displacement' in work formula?

W = F d cosθ

Is the displacement infinite making work infinitely increasing or it is the displacement covered by that object while the force is being applied or when there is acceleration being produced?