Which statement about the forces acting on an object is correct?
If an object is stationary, there are no forces acting on it.
If an object is moving at a constant velocity, the resultant force acting on it is zero.
If a non-zero resultant force acts on an object, its speed must increase.
If an object is slowing down, the resultant force acting on it must be zero.
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.