A charged plastic rod attracts a small charged sphere without touching it. The sphere hangs from a thread. Which statement correctly identifies the interactions?
The rod exerts a non-contact force; the thread exerts a contact force.
The rod exerts a contact force; the thread exerts a non-contact force.
The rod and the thread both exert non-contact forces.
The rod and the thread both exert contact forces.
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.