Chapter 6
Force and Pressure
See how pushes and pulls affect motion and pressure in fluids.
Overview
Force changes the state of motion of an object, while pressure tells us how concentrated that force is on a surface.
Formulas
Pressure
Pressure = Force / Area
When the same force acts on a smaller area, pressure increases.
Quick Revision
Remember
- Liquids and gases exert pressure in all directions.
- A sharp knife cuts better because it acts over a small area.
- Atmospheric pressure decreases with altitude.