Question

cca 2 retest
a book is laying at rest on a classroom table. which of the following statements explains why the book remains at rest.
a there are no forces acting on the book.
b the forces acting on the book are balanced.
c the forces acting on the book are unbalanced.

Explanation:

According to Newton's first - law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. When a book is at rest on a table, the force of gravity pulling the book downwards is balanced by the normal force exerted by the table upwards. So, the net force on the book is zero, and it remains at rest.

Answer:

B. The forces acting on the book are balanced.