An electron in a magnetic field moves along a circle with a radius of 38.3 m with a speed that follows: u(t) = voe-bt where b = 0.49 s- and vo = 270 m/s. Centripetal acceleration V Angular acceleration What is the angular acceleration at t = 4.2 s? A Hint About Angular Kinematics a= Hint: Total acceleration What is the magnitude of the total acceleration at t = 4.2 s? A Hint About Magnitude atotal = Hint: Theta What is the angular displacement for the electron from t = 0 s until t = 4.2 s?. A Hint About Displacement Oradians = Hint