Which one below is not an apparatus needed for Free Fall? a. Masses b. Metal Ball c. Spark Counter d. Meter Stick

The correct answer is c. Spark Counter.<br /><br />In a free fall experiment, the apparatus typically includes masses, a metal ball, and a meter stick. The masses are used to measure the acceleration due to gravity, the metal ball is dropped from a height, and the meter stick is used to measure the distance traveled by the ball. A spark counter is not typically used in a free fall experiment, as it is more commonly associated with counting sparks in electrical experiments.