Question

Aiden wants to find the mass of a bowling ball which unit should he use

Answer 1

Kilogram.

Explanation:

Mass of an object is the amount of matter in object and that amount is measured in its standard unit.

Standard Unit is the common unit used for items in whole world.

So, Aiden should use the Standard unit of Mass.

The Standard Unit of Weight is KILOGRAM.

He can use other unit also like gram, pound, ounce, tone etc

Answer 2

He should use pounds.

Explanation:
A bowling ball as we know it is an American item. In Britain, bowling most commonly means "lawn bowling," which uses different equipment. A bowling ball would be for the ten-pin bowling Americans enjoy. Since it is an American sport, we would not use the metric system; instead, we would use pounds.