Question

a baby has a mass of 4kg ,what is its weight on Earth.

Answer 1

Explanation:

English (ie American now) system used POUNDS, and that is a WEIGHT. The “mass” in English system is actually called a “Slug”. If you didn’t take higher level science in high school, not sure you would be taught that. Some folks use Pound MASS (LBM) as a cheater way, 1 earth grav x 1 lb mass = 1 lb weight/force, but that ain’t kosher.But metric system used Kg or Kilogram as a MASS, and WEIGHT is a FORCE and that is NEWTONS (mass x acceleration).. so gravity times mass = weight.

English (ie American now) system used POUNDS, and that is a WEIGHT. The “mass” in English system is actually called a “Slug”. If you didn’t take higher level science in high school, not sure you would be taught that. Some folks use Pound MASS (LBM) as a cheater way, 1 earth grav x 1 lb mass = 1 lb weight/force, but that ain’t kosher.But metric system used Kg or Kilogram as a MASS, and WEIGHT is a FORCE and that is NEWTONS (mass x acceleration).. so gravity times mass = weight.And your “weight” on the Moon in pounds is less than on earth, but since Kilogram is a mass, you mass is the same everywhere.

So, A baby has a MASS of 4kg. Kg stands for Kilogram.A WEIGHT is in NEWTONS.Baby WEIGHT in SI is : 4 kg x 9.8 m/s2 (earth gravity) = 39.2 Newtons

Answer 2

Answer:

4× 9.8

is the weight

hope this helps you