A hydroelectric power plant uses spinning turbines to transform the kinetic energy of moving water into electric energy with 80 % efficiency. That is, 80 % of the kinetic energy becomes electric energy. A small hydroelectric plant at the base of a dam generates 40 MW of electric power when the falling water has a speed of 18 m/s.
What is the water flow rate −kilograms of water per second − through the turbines? Express your answer with the appropriate units.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

Ais the