Question

question 2
a spacecraft that seems to be motionless in deep space is given some type of quick push. which statement describes what will happen?
the spacecraft will move and will not stop until it is stopped by an equal and opposite force
the spacecraft will remain still because it only works on earth.
the spacecraft will remain still due to air resistance.
the spacecraft will move and then slowly come to a stop on its own

Explanation:

According to Newton's first law of motion (the law of inertia), an object at rest will remain at rest and an object in motion will remain in motion with a constant velocity unless acted upon by an external force. In deep space, there is no air resistance (or other significant forces like friction in a typical terrestrial sense). When the spacecraft is given a quick push (an external force), it will start moving. And since there is no force to stop it (no equal and opposite force as per the first - law scenario where an object's state of motion changes only when a force acts on it), it will not stop on its own.

Answer:

The spacecraft will move and will not stop until it is stopped by an equal and opposite force.