III. Directions: Fill in the blanks. 16. is the amount of matter in an object. 17. is an attractive force that exists between all objects that have mass. 18. Mass is often measured in 19. According to the law of all objects are attracted to one another with a gravitational force that is proportional to the mass of the objects and the distance between them. 20. is the gravitational force exerted on an object.
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16.Mass (M) is the measure of the amount of matter in an object. Mass is measured in grams (g).
17.Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.
18.Mass is an intrinsic property of matter and is measured in kilograms.
19.So for Newton, the force of gravity acting between the earth and any other object is directly proportional to the mass of the earth, directly proportional to the mass of the object, and inversely proportional to the square of the distance that separates the centers of the earth and the object.
20.The gravitational force exerted on an object near the earth's surface is called the object's weight.