Here's one way to test motorcycle helmets by Shark

Luckily, I don't think this is how they test them in reality. Normally reserved for executive's desks in the 1970s, the Newton Cradle demonstrates how momentum is transferred in the event of a collision. Shark have very cleverly taken that to make a decent point.

It's actually a promo for their new R Pro Carbon and Speed R helmets, which apparently don't transfer energy to your head in the case of impacts.

There's some talk that it's actually manipulated (read fake) but it's stil a cool promo. Just don't try it at home.