The weight of an object is the product of its mass and the acceleration due to gravity, which on Earth is approximately 9.80 m/s². Weight is therefore correctly determined by the object's acceleration due to gravity, as gravity influences the weight by acting on the mass.
The weight of an object is determined by multiplying the mass of the object by the object's acceleration due to gravity. The correct answer is D. The object's acceleration due to gravity. This acceleration, denoted as g, is approximately 9.80 m/s² on Earth. Hence, the formula for weight is w = mg, where w is weight, m is mass, and g is the acceleration due to gravity. Weight is different from mass as it takes into account the gravitational force acting upon the mass.
Regarding the other parts of the question, an object's momentum is proportional to its velocity and is expressed as p = mv, where p is momentum and v is velocity. Inertia, on the other hand, is a property best quantified by the object's mass, which is a measure of the amount of matter in an object, independent of gravity.