Technically neither. A Baseball is likely to be measud in ounces, since baseball is American, and the US has not formally adopted metric measurements. However, if the question is asking which would be the appropriate measurement - grams or kilograms - the answer would be grams. See the related question below.
They're typically measured in pounds. There are rule conversions to measurement in kilograms.
Neither. The maximum weight for a bowling ball is approximately 7.25 kilograms or 7250 grams.
It is measured in kilograms, but it also depends on the actual weight. The average bowling balls you can buy on the market weigh anywhere from 6 lbs to 16 lbs.
Pounds are used to measure the mass of a bowling ball in the US, although the mass of an object that size is usually measured in kilograms in other countries.Pounds (US)
kilograms
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Kilograms
A typical bowling ball weighs between 6,800 to 7,300 grams.
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.
Kilogram is a unit of mass, not of weight. According to the Wikipedia article, "they generally range from six pounds to 16 pounds in weight"; in kilograms, that would be about half this amount (roughly 3-8 kilograms).
Answer: Grams.
The mass of the ball in grams would be 2000 grams. To convert kilograms to grams, you multiply by 1000.