<p>A stream of water strikes a stationary turbine blade horizontally, as the dra

Question

<p>A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a velocity of +18.0 m/s, while the exiting water stream has a velocity of -18.0 m/s. The mass of water per second that strikes the blade is 43.0 kg/s. Find the magnitude of the average force exerted on the water by the blade.<br /> N<br /><br />Please explain answer and formula</p>
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Explanation / Answer

Average force, F = m a = m [ ( Vf - Vi ) / t ] = ( m / t ) ( Vf - Vi ) = 43 * [ 18 - ( - 18 ) ] = 1548 N

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