Heavy luggage on a passenger coach is stored in the compartment under the floor rather than on a roof rack. Why is this?
It lowers the centre of mass of the coach, making it more stable.
It increases the speed of the coach.
It decreases the kinetic energy of the coach.
It raises the centre of mass of the coach, making it more stable.
19 exam-style questions on CIE IGCSE Physics 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.