Which of the following moving objects has a non-zero resultant force acting on it?
A swimmer swimming in a straight line across a pool at constant speed
A satellite orbiting the Earth in a circular path at constant speed
A skydiver falling vertically at terminal velocity
A crate sliding down a straight ramp at constant speed
183 exam-style questions on CIE IGCSE Physics 1.5.1a Forces, resultant force and motion. Each one has a worked solution and a mark scheme showing where the marks go.