What is the weight of a 1.0 kg object at the surface of the Earth?

1. Weight is the gravitational force on a mass, equal to the mass times the acceleration due to gravity. 2. Identify the knowns: the mass is 1.0 kg and the acceleration due to gravity is 9.80 m/s^2. 3. Substitute the values: (1.0 kg)(9.80 m/s^2) = 9.8 N. 4. Quoting 1.0 N confuses the mass in kilograms with the weight in newtons. _Source: OpenStax College Physics (CC BY 4.0), Ch 4 "Dynamics: Force and Newton's Laws of Motion", section 4.3 Newton's Second Law of Motion: Concept of a System_