Once out of the earth’s gravity, the astronaut is affected by the problem of ______ (weight).
举一反三
- The astronaut’s weight in space is the same as it is on the Earth.
- Anything dropped falls towards the center of the earth because of ______. A: weight B: gravity C: density D: attraction
- It was in 1665_____the concept of the Earth’s gravity interested Isaac Newton.
- For an astronaut, earth is
- Aboard a ship，multiplying a load’s weight by the distance of the load’s center of gravity from the centerline results in the load’s（）.