Hey student is investigating gravity and falling objects she drops three balls and times how long does it take each of us to hit the ground what is the most likely source of error?

One possible source of error in the experiment could be human error in accurately timing the fall of each ball. The student may not start or stop the timer at the exact moment the ball is released or hits the ground, leading to inaccuracies in the recorded times. Other sources of error could include variations in the release height or angle of each ball, air resistance affecting the speed of the fall, or discrepancies in the surface on which the balls are dropped.