A particle passes a point A A\,A with speed u m s−1u\text{ m s}^{-1}u m s−1 and moves with constant acceleration a m s−2a\text{ m s}^{-2}a m s−2. It passes point BBB, 45 m from AAA, after 3 s and point CCC, 147 m from AAA, after 7 s.
Find u u\,u and aaa.
Determine whether the particle ever comes to instantaneous rest after passing AAA. Justify your answer.
158 exam-style questions on OCR (MEI) A Level Maths 3.2 Kinematics, covering 3.2.1 Language of kinematics, 3.2.2 Position, displacement, distance and distance travelled, 3.2.3 Velocity, speed and acceleration distinctions, 3.2.4 Draw and interpret kinematics graphs, 3.2.5 Differentiate position and velocity (A-level only), 3.2.6 Integrate acceleration and velocity (A-level only), 3.2.7 When constant acceleration formulae apply, 3.2.8 Solve 1-D kinematics problems, 3.2.9 Language of kinematics in 2 dimensions (A-level only), 3.2.10 Extend 1-D techniques to 2-D using vectors (A-level only), 3.2.11 Cartesian equation of a path (A-level only), and 3.2.12 Vectors to solve kinematics problems (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.