A moving object has several properties. Consider the following list:
I. mass II. direction of motion III. shape IV. speed
Which of these properties can be changed by applying an external force to the object?
I and II only
II and III only
II, III, and IV only
I, III, and IV only
245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.