since the mentos are falling into the coke, the hole is facing upward where the bottom of the mentos is. When the mentos fall into the coke bottle, the coke will shoot up and push the mentos a tiny bit. t should be flipped, where the coke bottle shoots upward while the soda is shot downward. 🙄 Coke can't go al the way up into space and still push the mentos thing.