Answer:
In space we feel weightlessness because the earth's gravity has less effect on us. The Earth's gravitational attraction at those altitudes is only about 11% less than it is at the Earth's surface. If you had a ladder that could reach as high as the shuttle's orbit, your weight would be 11% less at the top.
Explanation:
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Using the picture provided the forces are added together, because they are putting force on an object the same direction, thus the forces are added.
A.
Destructive interference is when two waves cancel each other out or when the crest of one wave passes through the trough of another wave.
