Brainteaser posters aim to get people thinking about physics

One for example asks: “Two filled cola cans, one frozen, one liquid, roll down a short smooth slope – which one gets to the bottom first?”

Ooh, ooh, ooh! I know this one!

The questions are engaging but you have to think before answering. “Most of the questions do surprise,” she said, for example: “A clock on the equator runs slower, faster or identical to one on the North Pole?”

That one, too.

All the Q&A are here; there is a link to a document file for the answers down at the bottom.