Flashcards for AQA GCSE Physics 5.7.1 Momentum is a property of moving objects, covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2. 22 cards, matched to the AQA GCSE Physics (8463) specification. Recall questions account for roughly 40% of marks at GCSE Physics, so these target the marks you can secure before the paper starts.