6. The acceleration due to gravity:
a) Increases with altitude
b) Decreases with altitude
c) Remains constant with altitude
d) Depends on the mass of the object
7. What is the value of acceleration due to gravity at the center of the Earth?
a) 9.8 m/s²
b) Zero
c) Infinity
d) Cannot be determined
8. Which of the following is not a factor affecting the gravitational force between two objects?
a) Mass of one object
b) Mass of the other object
c) Distance between the objects
d) Speed of the objects
9. The gravitational force between two objects will increase if:
a) Their masses decrease
b) Their masses increase
c) Their distances apart increase
d) None of the above
10. The weight of an object is:
a) The force with which it is pulled towards the ground
b) The force with which it is pushed away from the ground
c) The force with which it is pulled towards the center of the Earth
d) The force with which it is pushed away from the center of the Earth
