Lesson Plan: Relating Force, Pressure, and Area Physics • 9th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use the formula for pressure, 𝑝 = 𝐹/𝐴, to calculate pressures that are produced by forces acting on areas.


Students will be able to

  • use the formula 𝑝=𝐹𝐴 to calculate pressures, forces, and areas,
  • convert between Pa and kPa.


Students should already be familiar with

  • 𝐹=𝑚𝑎,
  • 𝑊=𝑚𝑔,
  • conversion between m2 and cm2.


Students will not cover

  • pressure in fluids,
  • problems involving forces acting nonnormally on surfaces,
  • motion of objects that have pressures applied to them,
  • mechanisms of production of forces.

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