Physics 9702 · AS & A Level · Momentum and Newton's laws of motion

Momentum and Newton's laws of motion — practice question

A book with weight $W$ is resting on a table. A student tries to describe Newton’s third law of motion by stating that ‘action equals reaction’. If the book’s weight is the ‘action’ force, what force is the ‘reaction’ force?

  • Athe force $W$ acting downwards on the Earth from the table
  • Bthe force $W$ acting upwards on the book from the table
  • Cthe force $W$ acting upwards on the Earth from the book
  • Dthe force $W$ acting upwards on the table from the floor

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI