Multiple choice What is rolling friction? When a body slides on the surface of another body. When a body rolls over the surface of another body. When a body is kept stationary on another body. When a body is accelerating on the surface of another body. Reveal answer Fill a bubble to check yourself B Correct answer Explanation Rolling friction occurs when a rounded object (like a ball or wheel) rolls over a surface instead of sliding across it. The contact point continuously changes, creating less resistance than sliding friction.