8 : An electron is released from rest Am from an infinite plane of positive charge . The plane produces an electric field with a constant magnitude

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8 : An electron is released from rest Am from an infinite plane of positive charge . Theplane produces an electric field with a constant magnitude of TOOV / m . How fast is theelectron moving when it collides with the plane ? Use m. = 9. 1 1 * 70"kg .9: Two charges Q, = e and Q = 3 0 are placed near each other . Q , is kept there but Q isreleased from rest . Find the speed of Q , when it is 10 m from Q, . Use Maz = 1. 0 x 10# kg .4 23 M