Final answer:
In Physics, the formula for calculating weight on Earth is w = mg, where m is mass and g is the acceleration due to gravity, which is approximately 9.80 m/s². Therefore, an object with a mass of 81.00 kg has a weight of 793.80 N on Earth.
Step-by-step explanation:
The subject of the question is Physics, specifically related to the concept of weight and the acceleration due to gravity on Earth. The weight of an object on Earth can be calculated using the formula w = mg, where m is the mass of the object and g is the acceleration due to gravity, which is approximately 9.80 m/s² on Earth. Thus, for a mass of 1.0 kg, the weight would be (1.0 kg)(9.80 m/s²) = 9.8 N. If your mass is 81.00 kg, your weight on Earth is calculated as 81.00 kg multiplied by 9.80 m/s², which equals 793.80 N.
It is important to note that the acceleration due to gravity can take positive or negative values based on the selected coordinate system, and that g varies slightly across different locations on Earth. Moreover, objects in free fall are subject to gravitational force but might also experience air resistance.