Question

match the force pair with the reason they must be equal and opposite.ⓘ instructionsthe upward normal force of a book resting on a table with its weight.the force of a mule pulling on a cart and the force of the cart pulling back on the mule.the forces must be equal and opposite since they are an action/reaction pair of forces.the forces must be equal and opposite because the object is not accelerating and thus has no net force on it.need help? review these concept resources.

Explanation:

1. For the book on the table: The normal force and weight act on the same object (the book). Since the book is stationary (no acceleration), the net force on it is zero, so these forces must be equal and opposite.
2. For the mule and cart: The force of the mule on the cart and the cart on the mule are an action-reaction pair, which by Newton's third law are always equal and opposite, acting on two different objects.

Answer:

1. The upward normal force of a book resting on a table with its weight → The forces must be equal and opposite because the object is not accelerating and thus has no net force on it.
2. The force of a mule pulling on a cart and the force of the cart pulling back on the mule → The forces must be equal and opposite since they are an action/reaction pair of forces.