Start Physics

Study school physics in one flow: concepts, worked examples, practice, review. The app follows your device language —— English or Korean. Switch at any time; your records carry over. ■ It traces the gap If you keep missing conservation of mechanical energy and the real gap is in work and kinetic energy, solving the same problem a hundred more times will not help. This app gathers the concepts behind your wrong answers, walks back along the prerequisites to the weakest one, and tells you where to start again. A unit you reach this way opens its concepts and examples even when it is locked, and it stays open. Sometimes the gap is in math; the card then opens that unit in our Start Math app. ■ Constants are given inside the problem Some textbooks take gravitational acceleration as 9.8 m/s², others as 10. If the answer depends on which book you own, that is guessing, not study. Every…