A model rocket has the (vertical) velocity vs. time graph shown. The rocket is launched from the ground and flies straight up while its engine fires . We have defined the upward direction to be “positive.” a. Circle the time on the graph when the rocket reaches its HIGHEST ALTITUDE.

b. Calculate the highest altitude it reached in the space below, making your method clear.

explanation:

newton's third law, for every action there is an equal and opposite reaction.

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.

answer///terminator or twilight zone;