A student leaning up against a wall does not fall through the wall.

A marble rolls in a straight line at constant velocity across a level table top.

A constant force applied to two dissimilar cars produces two different accelerations.

A marble that rolls off a table top accelerates to the floor.

At a karate demonstration, a novice hits a stack of bricks with the side of his hand and breaks his hand.

A book placed carefully on a level table top remains where it was placed.