What is the acceleration of an object at sea level on Earth, if the Earth's radius is 6.378 x 106 m, and the mass of the Earth is
5.97 % 1024 kg?

Give an example for each of the following situations: 1) negative acceleration, but positive velocity 2) positive acceleration and positive velocity 3) positive acceleration, but negative velocity 4) negative acceleration and negative velocity 5) positive velocity and no acceleration