An object at rest will stay at rest unless acted on by.an outside force. The tendency of the ball to stay at rest before Pedro breathes on it it called its __ acceleration vector inertia velocity

## Step 1<br />The problem is asking for the term that describes the tendency of an object to stay at rest unless acted upon by an outside force. This is a concept in physics known as inertia.<br /><br />## Step 2<br />Inertia is the property of an object to resist any change in its state of motion. This means that an object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.<br /><br />## Step 3<br />The other options provided, acceleration, vector, and velocity, do not describe this tendency. Acceleration is the rate of change of velocity, vector is a quantity that has both magnitude and direction, and velocity is the speed of an object in a given direction.