Long answer·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 car starts from rest and reaches in on a level road. Neglect resistive forces.
Total: 4 marks
(a) Find the increase in kinetic energy. (1 mark)
(b) Find the average power delivered. (1 mark)
(c) Find the average acceleration. (1 mark)
(d) Find the average net force. (1 mark)
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