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# If for every force, there is an equal and opposite reaction force, all forces are balanced. However, this means that an object can't be moved by an unbalanced force. So how the heck does anything accelerate?

Question #87629. Asked by thegogga. (Oct 22 07 7:04 PM)

ferfer72

Potential energy

http://en.wikipedia.org/wiki/Potential_energy

 Oct 22 07, 8:58 PM

### Other Similar Questions & Answers

 When calculating the gravitational force between two objects, this force changes as a function of the radius as the other variables remain constant. However, when attempting to calculate the time it takes for an object to reach another when the net force is gravity, a problem arises in trying to calculate the net force, as the radius is always changing; this in turn causes the acceleration to change. Is there any way to calculate the time an object takes to reach another with given masses and a given initial velocity and radius?

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