Answer the following five problems. (1) As the Earth rotates the AB1 building moves in a circle. The AB1 building a) has a constant velocity. b) has a net force on it. c) has no forces acting on it. d) has zero net force on it. e) has zero acceleration. (2) The net force on a 100 kg professor sliding eastward at a constant speed of 1 m/s across a waxed floor is a) 980 newtons downward. b) 980 newtons eastward. c) 1000 newtons. d) 100 newtons. e) zero. (3) A copper bar has a mass of 0.60 kilograms and a weight of 5.9 newtons on the Earth where the acceleration of gravity is 9.8 m/s. What would the mass and weight of the same copper bar be on the Moon where the acceleration of gravity is 1.6 m/s. (4) What would be the acceleration of the bar in (3) if the force of the Earth on it were the only one on it? (5) The mass of the Earth is 6.0X1024 kg. What would be the acceleration of the Earth if the force of the bar in (3) were the only one on it?