Case study·Hard exam skill (4/5)·No calculatorNeeds mentor review
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 straight communication cable is stretched from to Model the cable as a line segment in space.
Total: 4 marks
(a) Find the direction ratios of the cable. (1 mark)
(b) Write the vector equation of the line containing the cable. (2 marks)
(c) Find the midpoint of the cable. (1 mark)
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