Moon effect. some people believe that the moon controls their activities. the moon moves from being directly on the opposite side of earth from you to be being directly overhead. assume that the earth-moon (center-to-center) distance is 3.82 108 m and earth's radius is 6.37 106 m. (a) by what percent does the moon's gravitational pull on you increase? % (b) by what percent does your weight (as measured on a scale) decrease? %

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)