1. In a magical fountain, custard is propelled upwards through a nozzle by a pump. 10kg of custard passes through said nozzle every 3 seconds, and the custard reaches a height of 10m after leaving said nozzle. 

 

What is the power of the pump (assuming 100% efficiency), and at what speed does the custard leave the nozzle? (Take g = 10m/s2).