Question

describing why objects move
why will all of the books in this line of books fall over?
check all that apply.
each book is too close to the next book.
each book pushes the next book.
each book transfers energy to the next book.
each book pulls the next book.
each book does work on the next book.

Explanation:

• When one book falls, it pushes the next book. This push is a form of force.
• According to the law of conservation of energy, when a book moves (due to being pushed), it transfers energy to the next book.
• Work is done when a force causes an object to move. Here, the falling book does work on the next book by pushing it (causing it to move).
• The closeness of books is not the fundamental reason (even if spaced a bit, if the push - transfer - work mechanism is there, they can fall). Pulling is not the action here as the motion is due to pushing.

Answer:

• B. Each book pushes the next book.
• C. Each book transfers energy to the next book.
• E. Each book does work on the next book.