The correct answer iS: 3.60 s A baseball player throws a ball straight up into the air. At a height of 3.00 m above
the release point, the ball is moving at 1.25 m/s. What was the ball's initial speed?

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."