A particle P P\,P moves with constant acceleration (−2i+5j)(-2\mathbf{i} + 5\mathbf{j})(−2i+5j) ms−2^{-2}−2. At time t=0t = 0t=0, P P\,P has speed u u\,u ms−1^{-1}−1. At time t=2t = 2t=2, P P\,P has velocity (7i−j)(7\mathbf{i} - \mathbf{j})(7i−j) ms−1^{-1}−1.
Find the value of uuu.
182 exam-style questions on Edexcel A Level Maths Forces and Motion, covering 10.1 Force Diagrams, 10.2 Forces as Vectors, 10.3 Forces and Acceleration, 10.4 Motion in 2 Dimensions, 10.5 Connected Particles, and 10.6 Pulleys. Each one has a worked solution and a mark scheme showing where the marks go.