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An object weighs 30 N on Earth. A second object weighs 30 N on the moon. Which has the greater mass? A) the one on Earth B) the one on the moon C) they have the same mass D) not enough information to say

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Final answer:

The object that weighs 30 N on the moon has the greater mass. This is because for an object to maintain the same weight on the moon and the Earth, it must have a greater mass on the moon due to its weaker gravitational pull.

Step-by-step explanation:

The answer to the question is B) the one on the moon. Because the force of gravity on the moon is less than that on Earth (approximately one-sixth), an object must have a greater mass to weigh the same 30 N on the moon that it does on Earth.

Weight is the force that gravity exerts on an object, and it's directly proportional to the object's mass. Weight changes as the force of gravity changes. For example, the weight of an object is less on the moon due to its weaker gravity.

If an object weighs the same on Earth and the moon, then the object on the moon must have a greater mass because it is 'resisting' a weaker force of gravity to have the same weight as the object on Earth.

Learn more about Gravity and Mass

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