A steel ball hangs from a thread near a magnet. The magnet does not touch the ball. The table lists three interactions.
| Interaction | Objects involved |
|---|---|
| P | Thread and ball |
| Q | Magnet and ball |
| R | Earth and ball |
Which classification is correct?
P is contact; Q and R are non-contact.
Q is contact; P and R are non-contact.
P and Q are contact; R is non-contact.
P and R are contact; Q is non-contact.
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.