Q1. A fisherman standing on the edge of a pier hooks a fish on the surface of the water, and reels in the fishing line at a constant 0.50m/s. If the fisherman's fishing rod is a height of 3.0 m above the water, at what speed is the fish moving (horizontally) while it is 4.00 m away from the base of the pier?
Q2. To store the energy produced in 1hour by a 190 electric power plant, how many cubic meters of water will have to be pumped from the lower to upper reservoir? Suppose the upper reservoir is 340 above the lower one, and we can neglect the small change in depths of each. Water has the mass of for every 1.0.