In introductory physics, the product of a force acting over a displacement is the definition of which quantity?

Two forces, ${\vec{F}}_1=(1.50\hat{i}-0.80\hat{j}+0.70\hat{k})\text{ N}$ and ${\vec{F}}_2=(-0.70\hat{i}+1.20\hat{j})\text{ N}$, are applied on a moving object of mass 0.20 kg. The displacement vector of the object while the two forces act is $\overrightarrow{d}=(6.0\hat{i}-8.0\hat{j}+5.0\hat{k})\text{ m}$. What is the work done by the two forces?

How much work is done when a constant force of $60 N$ is used to pull a sled a distance of $5 m$ in the direction of the force?

You pull a 5kg box vertically up with a constant 100N force for 2m. How much work do you do?

You push a 3kg box against a wall for a distance of 2m with a force of 40N that makes a 53° angle with the horizontal, as shown. Calculate the work done by gravity.