In the absence of air resistance (such as in a vacuum chamber), all free-falling objects accelerate at the same rate. Which statement explains this?
All objects in a vacuum have the same weight.
The vacuum chamber eliminates the gravitational force on the objects.
The weight of an object is directly proportional to its mass.
The weight of an object is inversely proportional to its mass.
209 exam-style questions on CIE IGCSE Physics Mass and weight, covering Mass and weight. Each one has a worked solution and a mark scheme showing where the marks go.