Yes. At 16 ounces to the pound, an 8 pound ball would be 8*16=128 ounce ball.
They're typically measured in pounds. There are rule conversions to measurement in kilograms.
224 ounces
124 ounces
224 ounces
4 ounces
From the information provided it is impossible to answer the question. You require the velocity or speed of the ball and that is not measured in milliseconds - which a measure of time!
It would depend on what you measured, it would be challenging to measure the circumference, but the radius, length or width would be easy.
a bowling ball
The answer will depend on what characteristic of the ball is being measured: its radius, volume, mass, weight, shine?
If air resistance can be ignored (and it probably can from 2 rooms high) then both the bowling ball and golf ball will hit the floor at the same time. Although the bowling ball is harder to get moving than than the golf ball (it has more mass), the bowling ball also has a greater force pulling it down than the golf ball (as measured by its weight). The result is that both objects have the same acceleration.
Usually about 2-3 ounces.
One unit won't work for all of them. Coins and letters are small enough to be measured in grams. Bowling balls and encyclopedias are measured in pounds, and tractors in tons.