Coulombs law question!?

Posted on 2016-02-20 14:37:00 in Physics by NANCY

A small metal sphere, carrying a net charge of q1 = -3.00 μC , is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q2 = -8.00 μC and mass 1.50 g , is projected toward q1. When the two spheres are 0.800 m apart, q2 is moving toward q1 with speed 22.0 m/s. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity. 

1) What is the speed of q2 when the spheres are 0.380 m apart? answer in m/s 

2) How close does q2 get to q1? answer in m 

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