You would weigh a baseball bat in kilograms.
metal
a metal bat yes a metal will go farther
You can hit farther with a metal bat.
metal also known as aluminum
Little League from about 17-22oz Adult from about 28-34oz
a metal bat because its got a better grip so you can hold the bat harder
Yes
of course an aluminum bat would!!
metal
There isn't really a standard weight for wooden baseball bats like there is for metal and composite bats. Most of the time wooden bats are about a -2 to -3 drop. For example, a 33in bat would weight about 31 - 30 ounces.
Depends on how much the bat weighs on Earth