Mass and weight are similar but not the same thing. in which of the following examples would the objects weight change, but made stay the same? an astronaut travels from the earth to the moon a child grows taller an overweight person goes on a diet a snowball rolls downhill and picks up snow making it grow

we know that , weight of an object is given as

W = mg

where W = weight  , m = mass of the object  and g = acceleration due to gravity at that place.

An astronaut travels from the earth to the moon :

as the astronaut travels from the earth to the moon, the mass of astronaut stays the same but the weight change as acceleration due to gravity change since acceleration due to gravity on moon is only 1/6 times that on earth.

A child grows taller :

as child grows taller , he gains body mass . hence both mass and weight change.

An overweight person goes on a diet :

as an overweight person goes on diet , he loose body mass . hence both mass and weight change.

A snowball rolls downhill and picks up snow making it grow :

As snowball rolls downhill , it gains snow, hence its mass and in turn the weight change.

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