A metal ball is released from rest from a high platform on Earth. Air resistance is negligible.
What is its speed when it has fallen 45 m?
(Take the acceleration of free fall to be g=9.81 m s−2g = 9.81\text{ m s}^{-2}g=9.81 m s−2.)
15 m s−115\text{ m s}^{-1}15 m s−1
21 m s−121\text{ m s}^{-1}21 m s−1
30 m s−130\text{ m s}^{-1}30 m s−1
44 m s−144\text{ m s}^{-1}44 m s−1
204 exam-style questions on CIE IGCSE Physics Motion, covering Motion. Each one has a worked solution and a mark scheme showing where the marks go.