# Smartphones and Newton’s first law in escalators and roller coasters

> Research article (Physics Education, 2020) · cited 22× · AI/ML

**Wikidata**: [openalex:W3011347592](https://www.wikidata.org/wiki/openalex:W3011347592)  
**Source**: https://4ort.xyz/entity/smartphones-and-newtons-first-law-in-escalators-and-roller-coasters