What cound the cart to slow down when it was no longer pushed? Cravity Magnetium Force Friction

## Step 1<br />The question is asking about the force that opposes the motion of an object when it is no longer being pushed. This is a concept in physics known as friction.<br /><br />## Step 2<br />Friction is a force that opposes the relative motion or tendency of such motion of two surfaces in contact. It is not a property of the object itself, but rather a force that arises due to the interaction between the object and the surface it is in contact with.<br /><br />## Step 3<br />The other options provided, Cravity, Magnetium, and Force, are not the correct answer. Cravity and Magnetium are not recognized terms in physics, and while force is a general term that includes friction, it is not the specific force that opposes motion when an object is no longer being pushed.