Anything dropped falls towards the center of the earth because of ______.
A: weight
B: gravity
C: density
D: attraction
A: weight
B: gravity
C: density
D: attraction
举一反三
- Anything that is dropped falls towards center of the earth because of the pull of _____.
- Addition of weight above the center of gravity of a vessel will ALWAYS（）.
- Once out of the earth’s gravity, the astronaut is affected by the problem of ______ (weight).
- 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（）.
- 重心随着机翼上的载荷而移动。 A: The center of gravity moves in relation to the loads on the wings. B: Movement of the center of gravity is proportional to the loads on the wings. C: Movement of the center of gravity is proportionally the loads on the wings.