When a space ship is out of the pull of the earth
Correct answer: A. It moves with constant velocity
- A. It moves with constant velocity
- B. Zero velocity
- C. Its velocity starts decreasing
- D. Its speed starts decreasing
Explanation
The correct answer is that the spaceship moves with a constant velocity. According to Newton's first law of motion, an object will remain in its state of rest or uniform motion unless acted upon by an external force. In space, once a spaceship is beyond the Earth's gravitational pull and no other forces are acting on it, it will continue to move at a constant velocity. The other options are incorrect because they suggest changes in velocity or speed, which would require the presence of unbalanced forces.
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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