1) According to Newtons law of Universal Gravitation, the gravitational force between two object's is directly proportional to: a) The product of their masses b) The difference in their masses c) The mas of the larger object d) The mass of the smaller object 2) If the distance between two objects doubles, the gravitational force between them will a) Double b) Quadruple c) Halve d) Reduce by a factor of eight 3) What is the name of the constant symbol used in the formula for gravitational force? a) g b) G c) F d) m e) Gf 4) Two planets have the same mass. If the distance between them is tripled, the gravitational force between them will be a) Triple the original force b) Reduced to one-third the original force c) Unaffected d) Nine times the original force 5) The Earth exerts a gravitational force on the Moon. Does the Moon also exert a gravitational force on the Earth? a) No, the Moon is too small b) Yes, but with a weaker magnitude c) Yes, and it has the same magnitude d) The force depends on the moon phase 6) Newton's Law of Universal Gravitation helps explain a) Why objects fall to the ground b) Why planets move in elliptical orbits c) Only the behavior of very small objects d) The force between electrically charged objects 7) If you drop a bowling ball and a feather at the same time from the same height (in a vacuum), which will hit the ground first? a) The feather, due to air resistance b) They will hit the ground at the same time c) The bowling ball, due to more mass d) The feather due to no air resistance 8) Gravity is: a) A contact force, requiring objects to touch b) An "action at a distance" force c) Only relevant for very massive objects d) Canceled out by the object's buoyancy 9) The value of the gravitational constant G is a) Very large and positive b) A constantly changing value c) Negative d) Depends on the objects involved 10) Newton's Law of Universal Gravitation applies to: a) Only objects on Earth b) Objects with a specific range of masses c) Objects moving at very high speeds d) All objects in the universe

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