micgab060807
Answered

A girl with 400 N force runs in a park with a length of 5m. The girl takes 10 seconds to get the end of the park. What is the power done by the boy on this activity?

Answer :

  • Force=400N
  • Displacement=5m

[tex]\\ \sf\longmapsto Work\:Done=Force\times Displacement [/tex]

[tex]\\ \sf\longmapsto Work\: Done=400(5)[/tex]

[tex]\\ \sf\longmapsto Work\:Done=2000N[/tex]

  • Time=10s

Now

[tex]\\ \sf\longmapsto Power=\dfrac{Work\:Done}{Time}[/tex]

[tex]\\ \sf\longmapsto Power=\dfrac{2000}{10}[/tex]

[tex]\\ \sf\longmapsto Power=200W[/tex]

Hi1315

Answer:

200W

Explanation:

First let's find the work done

[tex]work \: \: = \: \: force \times displacement \\ = 400 \times 5 \\ = 2000J \\ [/tex]

Now let's find the power

[tex]power = \frac{work}{time} \\ = \frac{2000J}{10s} \\ = 200w[/tex]

hope this helps you.

Please let me know if you have any other questions :-)

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