A ball is thrown vertically upward with an initial velocity of 3 m/s from the top of a building. The ball strikes the ground 4 sec after. What is the highest point, h above the building which the ball...

A ball is thrown vertically upward with an initial velocity of 3 m/s from the top of a building. The ball strikes the ground 4 sec after. What is the highest point, h above the building which the ball reach. What is the height of the building H. What is the velocity V of the ball before it hits the ground.