A steel coin and a paper disc of the same diameter are released at the same time from the same height.
In the classroom, the coin reaches the ground first.
Inside a vacuum chamber from which all air has been pumped out, they reach the ground at the same time.
What is the explanation for this?
Both objects weigh the same inside the vacuum chamber.
Both objects weigh less inside the vacuum chamber.
There is a greater air resistance inside the vacuum chamber.
There is no air resistance inside the vacuum chamber.
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.