A large box, labeled 1500 kg, and a small box, labeled 1.5 kg. Next to each box draw an arrow, pointing right, labeled 10 N. Ask students to explain which box will experience the greater acceleration, and to use Newton’s laws to explain. For bonus points, ask students to calculate the acceleration on each box, assuming that there is no friction between the boxes and the surface beneath them.

im guessing the west of station b

a=d/t

a="triangle"v/t

explanation:

a = acceleration

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.