Best app for learning physics, free of cost no hidden cost
FEATURES
★ time to time new content without updating app
★ learn physics online.
★ contents can be accessed without internet
★ very first loading
★ no hidden cost
★ give feedback
![14. [ CONSERVATION OF MOMENTUM ] A soft rubber ball of mass 0.2 kg is dropped from [ MAY 2002, HL ] screenshot 2](https://i.ytimg.com/vi/aIGeLfDJssg/mqdefault.jpg)
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://go.getnew.app/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
