A ball is projected vertically upwards with a speed of 20 m s-1 from a point h h\,h metres above the ground. The ball hits the ground 5 s later.
Find the displacement of the ball from the point of projection to the ground.
Hence find the value of hhh.
Find the speed of the ball as it hits the ground.
197 exam-style questions on Edexcel A Level Maths Constant Acceleration, covering 8.2 Modelling Assumptions, 8.3 Quantities and Units, 8.4 Working with Vectors, 9.1 Displacement-Time Graphs, 9.2 Velocity-Time Graphs, 9.3 Constant Acceleration Formulae 1, 9.4 Constant Acceleration Formulae 2, and 9.5 Vertical Motion Under Gravity. Each one has a worked solution and a mark scheme showing where the marks go.