Como calcular la velocidad un atleta en los 100 metros planos?
1 answer:
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Answer:
Explanation:
The acceleration of an object is the rate of change of velocity of the object; it is given by:
where
u is the initial velocity of the body
v is its final velocity
t is the time elapsed
In this problem, we have:
u = 5.0 m/s is the initial velocity of the skater
v = 10.0 m/s is the final velocity
t = 5 s is the time elapsed
Therefore, the acceleration of the skater is:
We can solve the problem by using Snell's law:
where
is the refractive index of the first medium (in this case, air, so 
)
is the refractive index of the second medium (in this case, water, so 
)
is the angle of incidence of the light, with respect to the vertical, so 
is the angle of refraction of the light inside the water, with respect to the vertical
Re-arranging the equation and using the data of the problem, we can find the the angle of refraction of the light inside the water:
where
Re-arranging the equation and using the data of the problem, we can find the the angle of refraction of the light inside the water: