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The toy car and racing track can be modelled as a closed system - AQA - GCSE Physics - Question 8 - 2021 - Paper 1
Question 8
The toy car and racing track can be modelled as a closed system. Why can the toy car and racing track be considered 'a closed system'? Tick (✓) one box. The racin... show full transcript
Worked Solution & Example Answer:The toy car and racing track can be modelled as a closed system - AQA - GCSE Physics - Question 8 - 2021 - Paper 1
Step 1
Why can the toy car and racing track be considered 'a closed system'?
Answer
The correct reason is that the total energy of the racing track and the car is constant. In a closed system, energy cannot be created or destroyed; it can only be transformed from one form to another. Therefore, the total mechanical energy, which comprises both kinetic and potential energy, remains constant as the toy car moves along the track.