Final answer:
An astronaut's weight in space, far from any celestial body, is zero due to the lack of significant gravity, but their mass remains constant at 70 kg. The correct answer to the question is: c) Weight is zero, mass is 70 kg.
Step-by-step explanation:
The relationship between mass and weight is important to understand in this context. Mass is an intrinsic property of an object, which means it does not change regardless of location.
Weight, on the other hand, is the force exerted on an object due to gravity, and can change depending on where the object is in space. In the case of an astronaut far from any celestial body in space, their weight would be effectively zero because there is no significant gravity acting on them. However, the mass of the astronaut remains constant.
Weight is the force exerted on an object due to gravity. In space, far from any celestial body, the gravitational force is negligible and therefore the weight of the astronaut would be zero. Mass, on the other hand, is an intrinsic property of an object that represents the amount of matter it contains. The mass of the astronaut would remain unchanged at 70 kg, regardless of her location.
Thus, for a 70-kg astronaut in space far from any celestial body, the weight is zero, and the mass is 70 kg. The correct answer to the question is: c) Weight is zero, mass is 70 kg.