A pump is pumping still water from the base of a well at a constant rate of 300kg per minute

Question

A pump is pumping still water from the base of a well at a constant rate of 300kg per minute.The well is 4.5m deep and water is released from the pump at ground level in a horizontal jet with a speed of 6.2 ms-1.

Ignoring any energy losses due to resistance, calculate the power generated by the pump.

Answer 1

The pump is moving the water at 5kg/s. That results in "potential" power to lift the water of 221Nm/s and 96Nm/s "kinetic" power to discharge the water, for a total of 317W.