Hobbies: I like playing football and games. Every week, I play soccer about 2-3 times with friends on weekends. As for playing games, I usually play them in the evening after completing my homework. Why I like them: I like playing soccer because it helps me exercise and is also fun to play with friends. Every time I score or play well, I feel very proud and excited. As for playing games, I like it because it helps me entertain and relax after stressful studying hours. Some games also help me develop thinking and creativity. How often: As I said, I play soccer about 2-3 times a week and play games in the evening when I have free time.

Máy bay đang bay có các dạng năng lượng chính là động năng, thế năng hấp dẫn, nhiệt năng và hóa năng, trong đó động năng và thế năng hấp dẫn là hai dạng năng lượng cơ học quan trọng nhất.