Una canica rueda hacia arriba una distancia de 5m en una rampa inclinada y luego se detiene y vuelve hasta un punto localizado 5m más abajo de su punto de partida. Suponga que x=0 cuando t=0. Todoel recorrido lo realiza en solamente 2 s. ¿Cual fue la rapidez media y cual fue la velocidad media?

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Explanation:

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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.