A stick balances on the rounded side of a grey cylinder. At the right end of the stick, a bottle sits with a dotted arrow leading down to it from a hand. At the left end of the stick a dotted arrow leads up to a small blue bag. Behind the bag are two pieces of ruler oriented vertically. In the example pictured, the soda bottle would act as the
.

The kinetic energy of the soda bottle will be converted into the
of the beanbag.

The higher the beanbag rises, the greater the
.

effort, kinetic energy and KE of the soda bottle

Explanation:

Those are the right answers on edge.

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.