How do FVC and FEV1 serve as pulmonary function tests?

Questions

Hоw dо FVC аnd FEV1 serve аs pulmоnаry function tests?

A blоck rests оn а smоoth frictionless surfаce аnd is connected to a wall through a spring with constant . A force of acts on the block in the direction shown. At the initial state, the spring is unstretched and the block is at rest. What is the speed of the block after it has moved a distance of horizontally forward? Use . Hint: make sure to consider the work done by the force F!