Please help I will mark Brainliest so watching a Bill Nye video and I'm not understanding this question ((What fluid is used to change the pressure in cars that raise and lower due to a hydraulic pressure lift?))
https://www. yout. ube. com/watch?v=VDGZGGlc5Tg&t=509s< br /> take off the dot between you and tube
( the part of the question start in min 6:00)

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?