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anonymous

  • one year ago

A pitcher exerts 100.0 N of force on a ball with a power output of 4,500 W. What is the velocity of the ball? 0.02 m/s, 45 m/s, 450 m/s, or 4500 m/s ?? :/ thank you!

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  1. Michele_Laino
    • one year ago
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    here we have the subsequent relationship between power P, force F and velocity v: \[P = Fv\]

  2. Michele_Laino
    • one year ago
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    so: \[v = \frac{P}{F}\]

  3. anonymous
    • one year ago
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    ok! what do we plug in? :/

  4. Michele_Laino
    • one year ago
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    here is next step: \[v = \frac{P}{F} = \frac{{4500}}{{100}}\]

  5. anonymous
    • one year ago
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    oh! so we get 45? is 45 m/s our solution?

  6. Michele_Laino
    • one year ago
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    yes!

  7. anonymous
    • one year ago
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    yay!! thank you:)

  8. Michele_Laino
    • one year ago
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    :)

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