A boat B B\,B moves with a constant velocity. At noon, B B\,B is at the point with position vector (3i−4j) km(3\mathbf{i}-4\mathbf{j})\text{ km}(3i−4j) km with respect to a fixed origin OOO. At 1530 the boat is at the point with position vector (−4i+17j) km(-4\mathbf{i}+17\mathbf{j})\text{ km}(−4i+17j) km.
Find the velocity of BBB.
363 exam-style questions on Edexcel A Level Maths Further Kinematics, covering 8.1 Vectors in Kinematics, 8.2 Vector Methods with Projectiles, 8.3 Variable Acceleration in One Dimension, 8.4 Differentiating Vectors, and 8.5 Integrating Vectors. Each one has a worked solution and a mark scheme showing where the marks go.