A car is traveling east at an unknown initial velocity. Without changing directions, it accelerates at 0.75 m/s2 for a distance of 300 m increasing its velocity to 30 m/s. What was the initial velocity of the car

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)