Wushu 武术, the term itself originally describes the technique applied to stop or end the fighting. Wushu has evolved through time and now represents a form of sport that includes various hand combat techniques and weapons with Chinese heritage.
In Mandarin, Kung Fu actually means time and effort. When you spend a lot of time on something: Like you have trained wushu for 5-10 years, we usually say you put a lot of efforts (Kung Fu) on training, or many efforts (Kung Fu) on cooking, many efforts (Kung Fu) on writing. Kung Fu is a broad and general term.
In the modern world, Kung Fu describes something, or mostly describes Chinese Kung Fu. It is like a vocabulary, the meaning itself will change from time to time with the culture development. Kung Fu also represents Wushu, including a lot of sport. Something that take you a long time to do can all be represented as Kung Fu.
Mixed martial art is actually a sport with a set of rules and regulations depending on the platform in which one competes in. it combines different type of martial arts around the world, and transforms into a new discipline called mixed martial arts. If you spend a lot of time training in mixed martial arts discipline, then essentially, you are applying the idea of Kung Fu in practicing MMA.
Unfortunately, I think there has not been many changes. With the current training, you can probably jump higher, or do more flips. Regrettably, there is no new rules or major breakthroughs that changed Wushu and this limited its development progress. This is also a question that I often think about.
Meditation can be part of Kung Fu simply based on the long hours that you spend on it, but this Kung Fu and the Kung Fu in Wushu as same in wording, but different in meaning. Meditation involves different religions, different methods, and psychological trainings. But the most important thing is your goal, whether you want to be healthier or to improve your balance in mentality. If you want to know more about the universe, or to understand life, meditation training is very intensive in order to achieve your goals.
My meditation is not related to Kung Fu. I only wish to learn more about the universe we live in and understand more about the meaning of life. To me, meditation is more spiritual than martial art.
Set a goal for yourself, find more information and the most important thing is to get a good teacher who can guide you.
功夫其實在中文是“時間”的意思。當你做任何一件事情下了很多功夫，可以說練武要花很多的時間：5年 – 10年所以下了很多的功夫，做飯下了很多功夫、寫字的功夫，所以功夫是很廣泛的。
功夫近代來講，形容某一種東西，更廣闊是形容中國功夫 Chinese Kung Fu，這有點像英文單詞；“酷”以前代表什麼呢？肯定代表一個含義，隨著文化的發展演變成不同的含義，現在代表著時尚、潮流，單詞的運用就像這樣。