In this question use g=9.8g = 9.8g=9.8 m s−2^{-2}−2
A stone is released from rest at the top of a cliff and falls freely under gravity.
The stone hits the sea 2.5 seconds later.
Find the speed of the stone as it hits the sea.
Find the height of the top of the cliff above the sea.
265 exam-style questions on AQA A Level Maths 3.2 Q: Kinematics, covering 3.2.1 Language of kinematics, 3.2.2 Graphs in kinematics, 3.2.3 Constant acceleration formulae, 3.2.4 Calculus in kinematics (A-level only), and 3.2.5 Motion under gravity and projectiles (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.