That depends upon the body that you are talking about but usually the volume would go up as well. They are directly proportional.
This should help you with your question:
Gravitational pull = 9.8 m/s^2
1/2 x 9.8 x 7^2 = 240.1 m
The rock has fallen 240.1 m.
I cannot help you with the rest, but this should give you a headstart.
Answer:
Explanation: Because electrons are delocalized around positively charged nuclei, metallic bonding explains many properties of metals. ... Further, because the electrons are free to move away from each other, working a metal doesn't force together like-charged ions, which could fracture a crystal through the strong repulsion.
Answer Option c. between gases should in all cases be extremely rapid because the average kinetic energy of the molecules is great.
it's A. here is the formule for kinetic energy :)
