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Cambridge International AS & A Level Physics · AS 3 · structured

Perfectly inelastic collision between trolleys

Momentum · Original GioPhysics question with a detailed, mark-by-mark answer guide.

Demand
demanding
Marks
5
Topics
2
Answer
Complete
Question5 marks

Two trolleys move in the same direction. The first has mass 1.2 kg and speed 4 m/s; the second has mass 0.8 kg and speed 1 m/s. They collide and stick together. Calculate their common speed.

Task interpretation

What a complete response should do

Build a visible chain from the information given to the quantity or statement requested.

Split the problem into linked stages and state why each relationship applies.

Response type
structured
Allocation
5 marks
Demand
demanding
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