In a physics lab, a 60-kg student runs up a 2.0-meter tall flight of stairs in 1.5 seconds. The student's power rating is approximately a. 20 b. 45 c. 80 d. 180 e. 200 f. 450 g. 800 h. 1800 w.

Question

Physics

Emiliano Santiago

16 December, 07:48

In a physics lab, a 60-kg student runs up a 2.0-meter tall flight of stairs in 1.5 seconds. The student's power rating is approximately a. 20 b. 45 c. 80 d. 180 e. 200 f. 450 g. 800 h. 1800 w.

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Answers (1)

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Bailey Francis · Answer 1

g. 800

Explanation:

Mass = 60-kg

Distance = 2m

Time = 1.5s

Using g = 10m/s^2

power rating = Work/time

Work = force * distance

= Mass * acceleration due to gravity * distance

= 60 * 10 * 2

= 1200 J

Power rating = 1200/1.5

= 800 J/s = 800Watts