Two carts on a track with negligible friction collide and stick together. The first cart with a mass of 0.550 kg was moving initially to the right with a velocity of 1.33 m/s and hits the second cart at rest with a mass of 0.350 kg. What is the initial momentum of the two cart system? b. What is the final velocity of the two carts after the collision?

c. Explain what type of collision this is and how you can tell.

its c i just checked it

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.

the answer to this is proletariats.

hope this : )