The answer to this question is:
C-"That moving clocks run slower"
Your Welcome :)
Answer:
It increased by a factor of 3.
Explanation:
The gravitational potential energy of an object is given by

where
m is the mass
g is the gravitational acceleration
h is the heigth of the object relative to some reference point (for instance, the ground)
As we see from the formula, the gravitational potential energy is directly proportional to the mass, m: therefore, if the mass of the cylinder is increased by a factor 3, then the gravitational potential energy will also increase by a factor 3.
Explanation:
3
i believe that they are all going at 3.2 meters each, I did 4 times 0.8
Either theory or evidence