At a point P, the electric field is 78 N/C at 51° counter-clockwise from the positive x axis. A particle of mass 4.7 kg and charge -0.11 C is located at P. Find
the direction of the force on the particle: ___ degrees counter-clockwise from the positive x axis
the direction of the acceleration of the particle: ___ degrees counter-clockwise from the positive x axis
I don't understand this