Physics
posted by Laura
An object is moving with constant velocity >v
Which situation is impossible in such a circumstance?
1. One force acts on the object.
2. Three forces act on the object.
3. No forces act on the object.
4. Two forces act on the object.
5. Four forces act on the object.

Elena
T =>he first law states that if the net force (the vector sum of all forces acting on an object) is zero, then the velocity of the object is constant =>
1. One force acts on the object. 
Bill
Synchronous communications satellites are placed in a circular orbit that is 3.59 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance?
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