Multiple choice general knowledge sports

If you are an astronaut in space and you threw a wrench then the amount of force needed to keep it going would be:

  1. Zero

  2. One and Half the force with which it was thrown

  3. Equal to it's mass

  4. Equal to it's weight
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A Correct answer
Explanation

In space, there is no air resistance or friction to slow down the wrench. According to Newton's first law of motion (law of inertia), an object in motion stays in motion at constant velocity unless acted upon by an external force. Once thrown, no force is needed to keep it moving - it will continue indefinitely at the same velocity.

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