Ferris wheel has a diameter of 76 m and completed one revolution every 20 min. a)Calculate the tangential speed the car
b) Calculate the magnitude to the centripetal acceleration of one of the car.

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.)