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

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.

One cannot simply give the basics of physics.