The velocity of outflow of a liquid from an open tank is identical to that of a freely falling body. Name this law and the principle behind the law.

State and prove the law of conservation of energy for a freely falling body.

Which of the following liquid pairs shows a positive deviation from Raoult's law?

A large tank containing water has a small hole near the bottom of the tank 1.5 m below the surface of water. Explain the principle used in deriving the velocity of water flowing from the hole.

Two balls are released simultaneously from a certain height, one is allowed to fall freely and other thrown with some horizontal velocity. Will they hit the ground together?