Posted by cindy on March 08, 19100 at 13:54:38:
In Reply to: Re: Newton's 1st law of Motion posted by laurenthein on January 27, 19100 at 16:00:03:
: : I'm having a disagreement about the precise definiton of Newton's 1st Law of Motion.
: : I said that "a body moving with constant velocity cannot change it's velocity unless acted on by an outside force."
: : My teacher counted this wrong, saying that I didn't mention anything about a body being at rest.
: : While this is true, does this make my definition incorrect?
Your answer was indeed correct. You said an object traveling at a constant velocity can not change its velocity. An object at rest has a constant velocity, 0 m/s. Hope this helps!