This application is designed with simple words and pleasant way to help people understand the basic concepts of physics. It includes the following chapters:

1. Collisions
2. Momentum
3. Force and change of momentum
4. Principle of preservation of momentum
5. Work of constant force
6. Work of changing force
7. Transport kinetic energy
8. Rotational kinetic energy
9. Gravitational energy
10. Theorem of change in kinetic energy
11. Mechanical energy
12. Principle of maintaining mechanical energy
13. Power