Gas molecules create pressure when they strike the walls of a container. Which statement is correct?
- AThey experience a change in force which exerts a pressure equal to momentum $\times$ area on the walls.
- BThey experience a change in force which exerts a pressure equal to $\frac{\text{momentum}}{\text{area}}$ on the walls.
- CThey experience a change in momentum which exerts a pressure equal to force $\times$ area on the walls.
- DThey experience a change in momentum which exerts a pressure equal to $\frac{\text{force}}{\text{area}}$ on the walls.