The laws of physics are a funny thing — simple on paper, yet complex in practice. When designing a motorcycle helmet, taking in all the factors and forces is a daunting task, which is why helmet manufacturers do such rigorous tests on their samples.

One test that we are pretty sure never occurs in the laboratory is the simulated Newton’s Cradle, for reasons that should become abundantly clear in a few short moments. Take this for the entertainment that it is, and hope to God that Mythbusters gets ahold of it and tests the science involved.