An object starts from rest and experiences a constant acceleration of 10 m/s2 to the right until it reaches 30 m/s. How far in meters did the object travel (use /- to indicate to the right or to the left)

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)