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Answer 1

$forc = + q \times electricfield \\ a = + q \times electricfield \frac{1}{mass \: of \: particle } \\ a = \frac{qe}{m} \\ yes \: acceleration \: i \: constant \\ \\ b). \\ v = \sqrt{ \frac{2qex}{m} } \\ c). \\ ke = \frac{1}{2} m {v}^{2} = qex$