have limited time

the rockets first company needs to hire an engineer to develop a prototype rocket. the company asks several engineers to provide a cost and time estimate for creating a prototype. each bid is shown in the table.

which prototype is the least cost-effective solution?

fast flight
higher flyers
orbit or bust
infinity & beyond

Higher Flyers

Explanation:

The company needs to develop a prototype rocket which means that it should be developed soon and it should cost less without compromising on the quality.  Out of the given option the cost quoted by Higher Flyers is the maximum and also the time period is most. This makes it the least cost effective solution.

The most cost effective will be "Orbit or Bust"

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.