Question

1. 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?

the rock will weigh exactly 100 newtons.
the rock will weigh more than 100 newtons.
the rock will weigh less than 100 newtons.
there is not enough information to know if the rock weighs the same, more, or less on mercury.

Explanation:

Weight is the force of gravity acting on an object. Since the force of gravity on Mercury is less than on Earth, the weight of the rock (which depends on the gravitational force) will be less on Mercury.

Answer:

The rock will weigh less than 100 newtons.