An object with charge q=−6.00×10−9Cq=−6.00×10−9C is placed in a region

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An object with charge q=−6.00×10−9Cq=−6.00×10−9C is placed in a region of uniform electric field and is released from rest at point A. After the charge has moved to point B, 0.500 m to the right, it has kinetic energy 3.00×10−7J3.00×10−7J.

(a) If the electric potential at point A is +30.0 V, what is the electric potential at point B?
(b) What are the magnitude and direction of the electric field?