A particle R R\,R moves with constant acceleration (−4i+3j)(-4\mathbf{i} + 3\mathbf{j})(−4i+3j) ms−2^{-2}−2. At time t=0t = 0t=0, R R\,R has speed u u\,u ms−1^{-1}−1 and initial velocity vector u\mathbf{u}u. At time t=2t = 2t=2, R R\,R has velocity (−i+8j)(-\mathbf{i} + 8\mathbf{j})(−i+8j) ms−1^{-1}−1.
Find the value of uuu.
30 exam-style questions on Edexcel AS 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.