A block is on a ship. Its weight is 45 N. The gravity acceleration g = 10 N/kg. When the block is brought to a space station surrounding the Earth, how much is its mass?

4.5 kg

Explanation:

Since weight, W = mg where m = mass and g = gravity acceleration = 10 N/kg and W = 45 N

m = W/g

= 45 N/10 N/kg

= 4.5 kg

The mass of the block on the ship is thus 4.5 kg. Since mass is an intrinsic property of a substance and does not change with location, the mass of the block when it is brought to as space station surrounding the earth is also 4.5 kg.

what was the answer?

explanation:

newton's third law, for every action there is an equal and opposite reaction.