If the force of gravity changes what happens to the mass of an object

The density of a liquid could be found by using

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Which are causes of mechanical weathering? (check all that apply) a. acid rain b. plant growth c. animal actions d. carbon dioxide e. pressure release i chose b & e and got the question wrong.