Two spheres of different masses, a heavy steel sphere and a light aluminum sphere, are released simultaneously from the same height inside a vacuum chamber.
Which statement correctly describes what happens and the physical reason for it?
Both spheres hit the bottom of the chamber at the exact same time because the acceleration due to gravity is independent of mass.
Both spheres hit the bottom of the chamber at the exact same time because they both fall at a constant, uniform speed.
The steel sphere hits the bottom first because the greater gravitational force acting on it produces a larger acceleration.
The steel sphere hits the bottom first because the maximum speed of a falling object increases with its mass in a vacuum.
204 exam-style questions on CIE IGCSE Physics Motion, covering Motion. Each one has a worked solution and a mark scheme showing where the marks go.