Four objects are described below.
Which object has a non-zero resultant force acting on it?
An object remaining at rest on a flat table.
An object sliding down an inclined plane at a constant velocity.
An object orbiting the Earth at a constant speed in a circular path.
An object traveling through deep space in a straight line at a 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.