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Martha is late for class, so she races her 75 kg body up a 4.0 meter flight of stairs in only 2.3 seconds. What is Martha’s power?
Group of answer choices

a. 1,300 W

b. 6,800 W

c. 130 W

d. 680 W

Respuesta :

adefioyelaoye

Martha's power is 1,300 W and is denoted as option A.

What is Power?

This is defined as the amount of energy used or transferred per unit time and the S.I unit is Watts.

Power = Work/ time

Work = force × distance

          = F = ma = 75kg× 10m/s² = 750N

    Work = 750N × 4m = 3000J

Power = work/time = 3000J/ 2.3s ≈ 1300W

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