A power tool comprising: a housing; a motor received in the housing; an output driven by the motor; and a control system that includes a rotational motion sensor configured to generate a rotational motion signal that corresponds to a rotational motion of the housing about an axis, a current sensor configured to generate a motor current signal that corresponds to an amount of current drawn by the motor, and a control circuit that is configured to receive the rotational motion signal and the motor current signal and to control operation of the motor, wherein the control circuit is configured: (a) to determine, based on the current signal, whether a detected kickback condition is likely to be false; (b) to determine, based upon the rotational motion signal, whether an uncontrolled kickback condition has occurred; and (c) to initiate one or more protective operations upon determining that an uncontrolled kickback condition has occurred and is not likely to be false; wherein the control circuit is configured to determine that the detected uncontrolled kickback condition is likely to be false when the current signal indicates that at least one of the amount of current drawn by the motor and a rate of change of the amount of current drawn by the motor is less than a threshold value; characterized in that it further comprises a mode change mechanism configured to select among a hammer only mode, a rotary drive only mode, and a rotary hammering mode, and a mode change sensor configured to generate a mode change signal that corresponds to the selected mode, wherein the control circuit is configured to determine that the detected uncontrolled kickback condition is likely to be false when the current signal indicates that the amount of current drawn by the motor is less than a current threshold value, and the control circuit is configured to set the current threshold value at a first current threshold value when the mode change signal indicates that the hammer only mode has been selected and at a different second current threshold value when the mode change signal indicates that the hammer only mode has not been selected. a housing; a motor received in the housing; an output driven by the motor; and a control system that includes a rotational motion sensor configured to generate a rotational motion signal that corresponds to a rotational motion of the housing about an axis, a current sensor configured to generate a motor current signal that corresponds to an amount of current drawn by the motor, and a control circuit that is configured to receive the rotational motion signal and the motor current signal and to control operation of the motor, wherein the control circuit is configured: (a) to determine, based on the current signal, whether a detected kickback condition is likely to be false; (b) to determine, based upon the rotational motion signal, whether an uncontrolled kickback condition has occurred; and (c) to initiate one or more protective operations upon determining that an uncontrolled kickback condition has occurred and is not likely to be false; wherein the control circuit is configured to determine that the detected uncontrolled kickback condition is likely to be false when the current signal indicates that at least one of the amount of current drawn by the motor and a rate of change of the amount of current drawn by the motor is less than a threshold value; characterized in that it further comprises a mode change mechanism configured to select among a hammer only mode, a rotary drive only mode, and a rotary hammering mode, and a mode change sensor configured to generate a mode change signal that corresponds to the selected mode, wherein the control circuit is configured to determine that the detected uncontrolled kickback condition is likely to be false when the current signal indicates that the amount of current drawn by the motor is less than a current threshold value, and the control circuit is configured to set the current threshold value at a first current threshold value when the mode change signal indicates that the hammer only mode has been selected and at a different second current threshold value when the mode change signal indicates that the hammer only mode has not been selected.