Newtons First Law   Newtons first laws states that : "An object in motion tends to stay in motion and an object at rest tends to stay and rest unless acted upon by and outside force." When in space, Newtons first law is very obvious.  When an object in space is set on a course, it stays on that course unless it is acted upon by some outside force.  Newtons first law is also present in every day life here on earth.  The place where we may experiance it the most is in our vehicles.  If you are driving your car down the road and you come to a sudden stop, then you are going to go through the widshield unless you are wearing a seatbelt!  The reason that you keep moving is because some outside force has stopped your car, but it has not stopped you.  This may be a good reason to wear your seatbelt.  This concept is also know as inertia. Back Home