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Motion and forces

Quick questions on Momentum and conservation of momentum - CCEA GCSE Physics

4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is conservation of momentum?
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Because momentum is a vector, you must give one direction a positive sign and the opposite direction a negative sign before adding.
What is q1?
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Calculate the momentum of a 1200 kg1200\ \text{kg} car moving at 15 m/s15\ \text{m/s}. [2 marks]
What is q2?
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State the principle of conservation of momentum. [1 mark]
What is q3?
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Two 0.50 kg0.50\ \text{kg} trolleys, initially at rest and held together by a compressed spring, are released. One moves left at 2.0 m/s2.0\ \text{m/s}. State the velocity of the other.

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