A book rests on a table. A student states that the upward force of the table on the book and the downward force of Earth on the book are an interaction pair. Why is this incorrect?
The two forces act on different objects and arise from the same interaction.
The two forces act on the same object and arise from different interactions.
The two forces act on the same object and must point in the same direction.
The two forces act on different objects and must have different magnitudes.
93 exam-style questions on Edexcel GCSE Physics 9.1 Forces and vectors, covering 9.1.1 Interactions and types of force, 9.1.2 Vector and scalar quantities, and 9.1.3 Vector diagrams and free body diagrams. Each one has a worked solution and a mark scheme showing where the marks go.