A student holds a book at rest on the palm of her hand.
The student says: 'The weight of the book and the upward force from my hand are an interaction pair.' Explain why the student is wrong.
Describe the interaction pair that includes the upward force from the hand on the book.
The book is now dropped. Describe the interaction between the book and the Earth while the book falls.
Explain why the gravitational force on the falling book is a non-contact force.
40 exam-style questions on AQA GCSE Physics 5.1 Forces and their interactions, covering 5.1.1 Scalar and vector quantities, 5.1.2 Contact and non-contact forces, 5.1.3 Gravity, and 5.1.4 Resultant forces. Each one has a worked solution and a mark scheme showing where the marks go.