1) What is gravity? a) Gravity is the force by which a planet or other body draws objects toward its center. b) Gravity strengthens with distance.  c) Gravity weakens with speed.  d) Gravity is the relationship between Earth and Mars. 2) What must you do to overcome gravity? a) fall b) add weight c) push or pull d) check distance  3) Which object would be most difficult to lift against gravity? a) a car b) a chair c) a marble d) a soccer ball 4) Which is the best example of gravity? a) a breeze blows, and a sailboat moves b) a car hits a tree, and its motion stops c) a book is pushed, and it moves across the table d) a person drops a ball, and it falls to the ground 5) What will happen if the Earth does not have any gravity? a) Life would cease to exist. b) The moon would crash into the Earth. c) The lifespan of man and animals would drop sharply. d) All objects not anchored down on their surface would float. 

GRAVITATIONAL FORCE

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