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ASSESSMENT ACTIVITY NO.3: Let's Solve!
Direction: Solve the following values of Work, Power and Energy on the given problem below.
Write your solution on the space provided.
1. Problem: A person of mass 70kg runs up a flight of stairs with a vertical height of 5m. If
the trip takes 7s to complete, calculate the person's work and power.
Solution for power done:
Solution for work done:​

Sagot :

Tokamakidn

Solution for work done:

Solving for F

F = weight = mg

F = (70 kg)(9.8 m/s²)

F = 686 N

Solving for W

W = Fd

W = (686 N)(5 m)

[tex]\boxed{W = \text{3,430 J}}[/tex]

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Solution for power done:

Solving for P

[tex]P = \dfrac{W}{t}[/tex]

[tex]P = \dfrac{\text{3,430 J}}{\text{7 s}}[/tex]

[tex]\boxed{P = \text{490 W}}[/tex]

[tex]\\[/tex]

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