SP8a Work and Power | Edexcel GCSE Physics Topic Mastery Pack

A focused three-component revision and exam practice pack for SP8a, covering the complete Edexcel Separate Science Physics specification for work done and power (P8.1, P8.4–P8.7, P8.12–P8.14).

Topic Mastery Sheet covers the equation E = F × d with a worked example, including the critical distinction between using slope distance (for work done against friction) and vertical height (for work done against gravity) - a reliable source of exam errors that is addressed directly; the equation P = E / t with the definition of the watt as one joule per second; how energy is stored and transferred in a range of systems (forces doing work, electrical equipment, heating); and a multi-step worked example combining gravitational PE, power and efficiency that mirrors the Higher exam style. A table of common unit conversions (kJ, kW, MJ) and an efficiency reminder from SP3 are included as supporting reference.

Student Exam Practice Sheet includes a three-part work-done question on a box pushed across a floor (calculation, constant-speed force explanation, energy form MCQ); a three-part efficiency and power question using a heater and motor (energy wasted, efficiency as a percentage, power from kJ and minutes); and a two-part skier question requiring students to identify the correct force and distance for a gravity calculation before computing useful power output. Question format matches the Edexcel style.

Teacher Answer Key provides a complete mark scheme with examiner notes specifying that the constant-speed explanation requires friction to be named for any marks to be awarded; that an efficiency answer of 0.6 scores the substitution mark only; and that the skier question requires use of vertical height (17 m) with weight (700 N), not slope distance, for the gravity calculation.

©BoxsiderResources. Licensed for single classroom use by the purchasing teacher. Not for redistribution or resale.