A person is standing in a lift. The lift is accelerating upwards. Which statement about the force exerted by the lift floor on the person's feet is correct?
It is zero.
It is less than the person's weight.
It is equal to the person's weight.
It is greater than the person's weight.
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.