Edexcel GCSE Physics · 1PH0
Specification 14.17P · Paper 2
Revise: Pressure ForceThe resulting net force therefore acts at right angles to the surface—in the direction described as normal or perpendicular to it.
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GCSE Physics · key term
A direction at 90° to a surface; also described as normal to the surface.
Used by Edexcel
Specification 14.17P · Paper 2
Revise: Pressure ForceThe resulting net force therefore acts at right angles to the surface—in the direction described as normal or perpendicular to it.
When asked for the direction of the force caused by gas pressure, state that it acts at right angles (perpendicular) to the surface.
In calculations, use the area over which the perpendicular force acts and convert it to square metres before using .
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