What are some experiments that demonstrate Newton's first law of motion?

Some experiments that demonstrate Newton's first law of motion include:

1. The classic example of a ball rolling on a flat surface without any external forces acting on it, demonstrating the concept of inertia.
2. A pendulum swinging back and forth without any external forces, showing how an object in motion stays in motion unless acted upon by an external force.
3. A car coasting on a straight road at a constant speed, illustrating how an object will continue moving in a straight line at a constant velocity unless acted upon by an external force.