A space traveller whose mass is 115kg leaves earth. what are his weight and mass; a) On earth
b) Interplanetary space where there are no nearby planetary objects?

(a) The mass of space traveler on Earth is 115 kg and its weight is 1127 N.

(b)  The mass of traveler at interplanetary space is 115 kg and its weight is 0 N.

Given data:

The mass of space traveler outside the Earth is, m = 115 kg.

(a)

Since, the mass of any object is always remains constant. In other words, there is no way to destroy mass and hence mass of traveler on Earth will be same as 115 kg.

While the weight will be,

W = mg

W = 115(9.8)

W = 1127 N

Thus, we can conclude that the mass of space traveler on Earth is 115 kg and its weight is 1127 N.

(b)

On interspace , his mass is still 115 kg,  and his weight is Zero Newtons. This is because the gravity at interplanetary space is zero.

That is,

W = mg

W = 115 (0)

W = 0 N

Thus, we can conclude that the mass of traveler at interplanetary space is 115 kg and its weight is 0 N.

Learn more about the gravity here:

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On Earth: mass = 115 kg; weight = 1127 N

Interspace:  mass = 115 kg; weight = 0 N

Explanation:

On Earth, his mass is 115 kg, and his weight is 115 kg * 9.8 m/s^2 = 1127 N.

On interspace , his mass is still 115 kg,  and his weight is Zero Newtons = 0 N

v=ir = 3x15 =45 v

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.