Galileo's experiment was a verification of the process of uniform acceleration. A rolling ball increased in velocity at a constant rate. This verification of constant acceleration is an instance of an object's inertia. In general, once an initial force is applied to an object, that force will continue until some other force acts against it.
Investigate toy vehicles to see what happens when you change the surface at the bottom of a ramp. Suitable for Year 2 pupils. Hamilton's science scheme uses hands-on investigative science activities to promote a deep understanding of scientific concepts and help children develop effective methods of scientific enquiry.