(Kelly of the Clue Crew plays with beakers.) In a force-and-movement experiment, the reason the water doesn't fall out of the cup is because this force pushing up against the card is greater than the weight of the water
The force on the card is just the pressure times the area over which... [DOC] [TLE] Water Rocket Physics Principles Forces and Motion - Scarsdale ... [PAR] and in a straight line unless acted on by an unbalanced force.