Newton's Third Law Quiz

The three fundamental laws of motion discovered by Sir Isaac Newton are the first law (law of inertia), the second law (law of acceleration), and the third law (law of action and reaction).

Newton's third law of motion states that for every action, there is an equal and opposite reaction.

An example of Newton's third law of motion from the text is when a swimmer pushes against the pool wall with her feet and accelerates in the opposite direction, the wall exerts an equal and opposite force back on the swimmer.

<p>The action and reaction forces in Newton's third law have equal magnitude or size.</p> Signup and view all the answers

<p>No, the action and reaction forces in Newton's third law are always opposite in direction.</p> Signup and view all the answers

<p>When someone sits on a chair, there are actually two pairs of forces acting.</p> Signup and view all the answers

<p>The force pushing the book acts towards the right, while the force of friction opposes it and acts towards the left.</p> Signup and view all the answers

<p>When a book is pushed across a table, another pair of horizontal forces is acting as the book tries to drag the table to the right, but the table is kept in place due to the opposing frictional force.</p> Signup and view all the answers

<p>When a book is placed on a table, the two pairs of vertical forces acting are the weight of the book on the table and the upward reaction force of the table on the book.</p> Signup and view all the answers

<p>In the context of a rifle recoiling when fired, the gunpowder explosion creates hot gases that expand outward, allowing the rifle to push forward on the bullet. Consistent with Newton's third law, the bullet pushes backwards upon the rifle, resulting in the recoil of the rifle.</p> Signup and view all the answers