7. a stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. the oncoming water stream has a velocity of 16.0 m/sec, while the outgoing water stream has a velocity of 16.0 m/sec in the opposite direction. the mass of water per second that strikes the blade is 30.0 kg/sec. find the magnitude of the average force exerted on the water by the blade.

The magnitude of the average force exerted on the water by the blade is 960 N.

Explanation:

Given that,

The mass of water per second that strikes the blade is,

Initial speed of the oncoming stream, u = 16 m/s

Final speed of the outgoing water stream, v = -16 m/s

We need to find the magnitude of the average force exerted on the water by the blade. It can be calculated using second law of motion as :

F = -960 N

So, the magnitude of the average force exerted on the water by the blade is 960 N. Hence, this is the required solution.

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