Edexcel IGCSE Physics 1.26P Momentum & safety features
Practise explaining how airbags, padding, carpets and crumple zones reduce injury by increasing impact time and lowering force.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- explain how a longer stopping time reduces force for the same momentum change
- link airbags, padding or carpets to reduced rate of change of momentum and injury risk
1.26P Momentum and safety features question 1
[Maximum number: 3]
This question is about momentum.
A child drops an egg from a height of 10 cm and the egg lands on the floor.
Explain why the egg is less likely to break if the floor is covered with a thick carpet than if the floor were covered in hard tiles.
idea of carpet increases impact time;
carpet reduces rate of change of momentum (for the same speed or momentum of egg);
(carpet) reduces force;
ignore references to hard/soft floors ignore references to absorbing force or reduction in 'impact' ignore references to energy
allow RA
allow RA allow reference to given equation or word equation allow reduces deceleration or acceleration
allow RA
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