Physics 101 SE contains over 150+ of the most common physics equations arranged as pictured above in twenty-three different sections of physics.

To solve for the main variable, the bottom dark gray field, just fill in your known values into the white fields and click calculate. You can see the formula used and the actual numbers used by just clicking the question mark button.

However, if you do not want to solve for the main variable, you can solve for any other you like. All you need to do is enter in all your known variables and click the small, round button next to your unknown value. By having the ability to calculate any of the variables, Physics 101 SE has the power to calculate hundreds upon hundreds of different results.

The ability of this approach gives the student the power and freedom to explore the formulas, their relationships and how differing parameters would change the results effortlessly. Experiment with the numbers and get a deeper connection between the equations and their affect.