In which of the following situations is the resultant force acting on the object equal to zero?
An aeroplane accelerating down a runway for take-off.
A spacecraft coasting through deep space at a constant velocity.
A cyclist rounding a circular track at a constant speed.
A skydiver whose downward speed is increasing.
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.