Answer: C. The rock will weigh less than 100 newtons.
Explanation:
The force of gravity on the surface of Mercury is much less than on Earth. A rock has a weight of 100 newtons on Earth. What do you know about the weight of the rock on Mercury?
A. The rock will weigh exactly 100 newtons.
B. The rock will weigh more than 100 newtons.
C. The rock will weigh less than 100 newtons.
D. There is not enough information to know if the rock weighs the same, more, or less on Mercury.
If the force of gravity on the surface of Mercury is much less than on Earth, then if a rock has a weight of 100 newtons on Earth, the same rock will weigh less than 100 newtons on Mercury. Therefore, the option C holds true.
The gravitational force of any planet can be referred to or considered as a force with which the land or such surface attracts things or objects towards itself. The gravitational force was first discovered by Newton, and thus, the unit of measurement of this force is 'newtons'.
Based on the above condition, it can be inferred that the if the gravitational force is lesser, then the weight of any object will also be lesser and vice versa. Thus, if the force of gravity on Mercury is lesser than the Earth, the weight of the objects will also be lesser on Mercury than on Earth.
Therefore, the option C holds true and states regarding the gravitational force.
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