Lots of points how much time would it take a crane to unload a railroad car of scrap metal if: 1. the total load of scrap metal weighs 50,000 n 2. the crane must carry the load a distance of 20 meters. 3. the power of the crane is 2,000 watts. 4. the crane can carry 3,000 n of metal at a time. 5. it takes 30 seconds for the crane to pick up the load, carry it 20 meters, drop it and return to the railroad car. solve and give an explanation.