Question

According to Newton’s first law of motion, when will an object at rest begin to move?

when its inertia decreases to zero

Answer 1

Newton's first law states that an object will remain at rest or move at a constant speed in a straight line unless it is acted on by an unbalanced force. According to Newton's first law, an unbalanced force is needed to move the book on your desk.

Step-by-step explanation:

Thus, according to Newton's first law of motion, an object at rest begins to move when an unbalanced force acts upon it.