A robotic hovercraft is gliding across a flat, frictionless surface. There is no resultant force and no resultant moment acting on it. Which statement about the hovercraft is correct?
It is in mechanical equilibrium.
Its speed is continuously increasing.
It is moving in a curved path.
Its angular velocity must be increasing.
43 exam-style questions on CIE IGCSE Physics 1.5.2a Moment of a force. Each one has a worked solution and a mark scheme showing where the marks go.