A force acts on a moving block of modeling clay. Which of these changes could not happen to the block solely because of the force?
a change in its speed
a change in its direction of motion
a change in its mass
a change in its shape
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.