What is the average power supplied by a 60.0 kg person running up a - ProProfs
     

What is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 m in 4.2 s?
A. 57 W
B. 560 W
C. 240 W
D. 670 W

This question is part of Ch 5 Work & Energy

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3 Answers

C. Perez

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C. Perez, Writer, Writer, Cleveland

Answered on Jun 04, 2019

The correct answer to this question is B, 560W. Power is defined as work over time. This work is measured in watts, which is abbreviated W. This work overtime is force applied to a distance. Work is measured in Joules, which is abbreviated with the letter J.

To find Power, the following equation should be used p = F x d divided by T. We know that d is 4m and t is 4.2s. To solve F, we would use this equation- 60kg x 9.81m/s2, which equals 588.6N. Plugging those answers into the equation 599.6N x 4 / 4.2s, which gives us 50 nxm/s = 560 j/s = 560W.

D. gray

Building buildings and building intelligence

D. gray, Builder, Builder, Las Vegas

Answered on Apr 19, 2019

C is the answer to this question. There are always some different types of power and energy that are being produced by people depending on the movement that they do. Take note that there are various factors that can also affect the amount of effort that people will place into the activities that they do.

There are different equations that people use in order to compute for power. Some examples are: V = I × R which is Ohm’s law equation. Another formula is P = I × V which is also known as the power law equation. It will depend on the circumstance which formula you will use.

mrsechols

Mrsechols

Answered on Aug 14, 2018

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