A firework rocket starts from rest at ground level and moves vertically. In the first 3 s of its motion, the rocket rises 27 m. The rocket is modelled as a particle moving with constant acceleration a m s−2a \text{ m s}^{-2}a m s−2.
Find the value of aaa.
Find the speed of the rocket 3 s after it has left the ground.
After 3 s, the rocket burns out. The motion of the rocket is now modelled as that of a particle moving freely under gravity. Find the height of the rocket above the ground 5 s after it has left the ground.
6 exam-style questions on Edexcel A Level Old Maths SUVAT. Each one has a worked solution and a mark scheme showing where the marks go.