A particle P P\,P moves with constant acceleration (2i−5j) m s−2(2\mathbf{i} - 5\mathbf{j}) \text{ m s}^{-2}(2i−5j) m s−2. At time t=0t = 0t=0, P P\,P has speed u m s−1u \text{ m s}^{-1}u m s−1. At time t=3 st = 3 \text{ s}t=3 s, P P\,P has velocity (−6i+j) m s−1(-6\mathbf{i} + \mathbf{j}) \text{ m s}^{-1}(−6i+j) m s−1.
Find the value of uuu.
Practise Edexcel A Level Old Maths Vectors with exam-style questions for A Level Old Maths. 9 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.