What kind of experiments can be conducted to demonstrate Newton's First Law of Motion?

One experiment to demonstrate Newton's First Law of Motion is the classic "inertia" experiment. This involves placing an object on a flat surface and then quickly pulling the surface out from under the object. The object will remain at rest or continue moving in a straight line due to its inertia, which is the tendency of an object to resist changes in its motion. This experiment shows how an object will stay in its current state of motion unless acted upon by an external force, as described by Newton's First Law.