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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

here we have the subsequent relationship between power P, force F and velocity v: $P = Fv$

2. Michele_Laino

so: $v = \frac{P}{F}$

3. anonymous

ok! what do we plug in? :/

4. Michele_Laino

here is next step: $v = \frac{P}{F} = \frac{{4500}}{{100}}$

5. anonymous

oh! so we get 45? is 45 m/s our solution?

6. Michele_Laino

yes!

7. anonymous

yay!! thank you:)

8. Michele_Laino

:)

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