Four objects are in motion. Which object is experiencing a non-zero resultant force?
An object moving at a constant velocity in a straight line.
An object sliding down a slope at a constant speed in a straight path.
An object moving at a constant speed around a curved track.
An object falling through the air at terminal velocity.
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.