... action of forces. Cơ học 2. More broadly, the branch of physics which seeks to formulate general rules for predicting the behavior of a physical system under the influence of any type of interaction ... push! 19 English for students of Physics – Vol 2 Ho Huyen 34"helium" after the Greek word for sun. Eventually, the element was also detected on earth through the use of a spectroscope. ... motion of two objects in terms of either speed, acceleration or direction. 1 NXB Đại học quốc gia Hà Nội 20 07. Từ khoá: English for students of Physic, Science, Grammar in use, English...