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A-Level MathematicsYear 2021Q4

14 4. A particle P has mass 0.5 kg. It is moving in the xy plane with velocity 8i m s−1 when it receives an impulse λ(−i + j) N s , where λ is a positive constant. The angle between the direction of motion of P immediately before receiving the impulse and the direction of motion of P immediately after receiving the impulse is θ° Immediately after receiving the impulse, P is moving with speed 4 10 m s−1 Find (i) the value of λ (ii) the value of θ (8) ___________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___________________________________________

Paper Source:9FM0_3C_que_20211019.pdf

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Exam Specification Info

This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.

Syllabus levelAdvanced Level (A-Level)

SubjectMathematics

Official MarksVariable (2–6 marks)