Urgent! need within 10 minutes A dog is sitting still when a cat goes running by at 5 m/s. The dog takes 2 s to react then begins to chase the cat. Our dog accelerates at a constant 4 m/s2 unit he catches the cat. A) Write an equation that relates the displacement of the cat to the displacement of the dog (xc and xd). B) Write an equation that relates the time the dog was in motion to the time the cat was in motion (tc and td). C) Write a motion equation for the cat, including any given variables. D) Write an equation for the dog that includes values that are given and the unknown variables from answer A and B? E) What is the displacement of the dog when it catches up to the cat? Be sure to show the steps you took to solve this problem.

a. are

talk back to him about the sport and show him your expertise or leave the room

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.