Determine the vector acceleration of the electron as a function of time. Express your answer using two significant figures. Enter the x and y components of the acceleration separated by a comma.
a) 9.8 m/s², 0 m/s²
b) 0 m/s², 9.8 m/s²
c) 4.9 m/s², 0 m/s²
d) 0 m/s², 4.9 m/s²