This film will answer the questions, what is inertia, why does the ball always try to fly in a straight line, which line is the shortest distance between two points? And be sure to tell about the trace that the point leaves. "How to Build a Shelving" Knowing how to build a rack will definitely come in handy in the future, but first, you need to figure out what is vertical and horizontal? What is an object trying to do when it stands on an inclined surface? What is parallel, and can parallel lines intersect somewhere?