What Is the velocity of this object In meters per second between 0 and 5 seconds?

Asteady current of 1 ais flowing through a conducter calculate the number of electrons that flows through conductor in 1second

"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."

Who was the first scientist to measure speed as distance over time?