Một người nặng 60 kg đi từ London đến New York trong thời gian 12 giờ". Với câu trên, có bao nhiêu đại lượng vô hướng và bao nhiêu đại lượng vecto

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

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How to know which equation of motion to use where?explain