A car is driving with a velocity of (7i−kj) ms−1(7\mathbf{i} - k\mathbf{j}) \text{ ms}^{-1}(7i−kj) ms−1, where k>0k>0k>0
Find speed of the car in terms of kkk
Find the bearing the car is travelling on in terms of kkk.
284 exam-style questions on Edexcel A Level Maths Vectors, covering 11.1 Vectors, 11.2 Representing Vectors, 11.3 Magnitude and Direction, 11.4 Position Vectors, 11.5 Solving Geometric Problems, and 11.6 Modelling with Vectors. Each one has a worked solution and a mark scheme showing where the marks go.