Case study·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A ball is released from one side of a double inclined plane and climbs the other side.
Total: 4 marks
(a) What energy conversion is mainly observed during descent? (1 mark)
(b) Why does the ball usually not reach exactly the same vertical height on the other side? (2 marks)
(c) State one way to make the observation closer to ideal conservation of mechanical energy. (1 mark)
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