Physics path · GCSE Physics

Can one wrong rearrangement break the whole energy account?

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Practice question

A 240 W motor runs a museum display for 50 s. The platform’s kinetic energy store increases by 4,500 J and the motor’s thermal energy store by 2,000 J; the rest increases the thermal energy stores of the bearings and floor. Write down the equation linking power P, work W and time t. Calculate W and account for all the input energy.

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Official curriculum

4.1.1.1 Calculating and accounting for energy transferred into a system

This challenge practises knowledge and exam skills from the official GCSE science curriculum. Use these sources to see the exact subject content and its wider Key Stage 4 context.

AQA specification 4.1.1.1 Calculating and accounting for energy transferred into a system GOV.UK Key Stage 4 science programme

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