In which of the following situations is a non-zero resultant force acting on the object?
A block sliding down a rough ramp at a constant velocity.
A heavy crate resting stationary on a warehouse floor.
A rocket accelerating upwards immediately after launch.
A block floating in equilibrium on the surface of a liquid.
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.