In a vacuum chamber on Earth, a heavy steel ball and a light plastic ball are released from rest and fall with the same acceleration.
Which statement explains why they fall with the same acceleration?
The gravitational force acting on an object in a vacuum is independent of its mass.
The gravitational force (weight) acting on an object is directly proportional to its mass.
Both objects experience the same gravitational force because they are in a vacuum.
The gravitational force (weight) acting on 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.