At 10 a.m. plane A A\,A has position vector (3i−4j)(3\mathbf{i} - 4\mathbf{j})(3i−4j) km and moves with constant velocity (−2i+5j)(-2\mathbf{i} + 5\mathbf{j})(−2i+5j) km h−1^{-1}−1. Another plane B B\,B has position vector (−i−10j)(-\mathbf{i} - 10\mathbf{j})(−i−10j) km and moves with constant velocity (i+7j)(\mathbf{i} + 7\mathbf{j})(i+7j) km h−1^{-1}−1.
Find the time when A A\,A is due west 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.