Phân tích quan niệm duy vật biện chứng về nguồn gốc và bản chất của ý thức. Ảnh hưởng của yếu tố văn hóa, xã hội hiện nay đến tính năng động , sáng tạp ý thức của cá nhân anh ( chị)

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?