What are the basics of physics. I want to learn them for an exam?

One cannot simply give the basics of physics.

If it were possible to give that information over in a few paragraphs or a few mimutes, then you'd see little stores everywhere, where you could drop in for an hour or an afternoon, pay a few bucks, and learn Physics. You don't, because you can't, because it isn't. Here are a few things you definitely need. But I have to tell you: If you don't put time and effort into learning them, they won't do you much good. = = > F=m a. = = > Total mass is conserved. = = > Total energy is conserved. = = > Everything falls at the same rate. = = > Sound needs material to travel through. Light doesn't. = = > Light, radio, heat, X-rays, and ultraviolet radiation are all the same thing. = = > It takes force on an object to make it speed up, slow down, or curve. A moving object with no force acting on it keeps going in a straight line at the same speed forever. = = > Gravity attracts every speck of mass in the universe to every other speck. The forces of attraction are greater when the masses are greater and closer together.