Estimate your total vertical distance traveled by measuring the height of one stair and multiplying by the total number of stairs. Record the results as the answers to parts (a) and (b) of this problem. Weigh yourself, and enter your mass (in kg) as the answer to part (c). Use those measurements to calculate how much power your body was able to generate during your ascent, and enter that value as your answer to part (d). Enter your result in units of watts, but for comparison you might want to remember that one horsepower is 745.7 watts. a. 30 seconds The time it took to run up the stairs. t=s Range: [2, 100]
b. 20 meters Total vertical distance. h= m Range: [2, 50]
c. 72 kg Your mass. m= kg Range: [18, 200]
d. how do i solve for work in Watts

i think the answer is a, hope this is right, that would be my best guess.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.