One axis of an open-loop positioning system is driven by a stepper motor, which is connected to a ball screw with a gear reduction of 2:

One axis of an open-loop positioning system is driven by a stepper motor, which is connected to a ball screw with a gear reduction of 2:1 (two turns of the motor is for each turn of the screw) the ball screw drives the positioning table. Step angle of the motor is, and patch of the ball screw is 6.0 mm. The table is required to move along the axis a distance of 600mm form its current position in exactly 25 sec. Determine (a) the number of pulses required to move the specified distance, and (b) pulse frequency (c) rotational speed of the motor to make the move