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1. |
A ball is dropped from a spacecraft revolving around the earth at a height of 120 km. What will happen to the ball? |
A. | It will fall down to the earth gradually |
B. | It will go very far in space |
C. | It will continue to move with the same speed along the original orbit of spacecraft |
D. | It will move with the same speed, tangentially to the spacecraft |
Answer» D. It will move with the same speed, tangentially to the spacecraft | |