In which of the following situations is the resultant force acting on the object equal to zero?
a spacecraft curving around a planet at a constant speed
a parachuter falling vertically downwards at a constant terminal velocity
a passenger train slowing down as it approaches a station
a cyclist accelerating from rest along a straight path
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.