return lateral acceleration in m/s/s

def rover_lat_accel(VFR_HUD, SERVO_OUTPUT_RAW):
    '''return lateral acceleration in m/s/s'''
    speed = VFR_HUD.groundspeed
    yaw_rate = rover_yaw_rate(VFR_HUD, SERVO_OUTPUT_RAW)
    accel = radians(yaw_rate) * speed
    return accel