A penguin drops a fish off a cliff and times how long it takes for the fish to land at the bottom of the cliff. Neglecting air resistance, how high is the cliff if it takes 9.2 seconds for the fish to land at the bottom of the clift? Give the answer in feet.

1360.3ft

Explanation:

Given parameters:

Time taken for the fish to land  = 9.2s

Unknown:

Height of the cliff  = ?

Solution:

To solve this problem, we use one of the kinematics equation:

  S = Ut  + g t²  

 S is the height

 U  is the initial velocity  = 0m/s

 g is the acceleration due to gravity  = 9.8m/s²

t is the time taken  

So;

 S  = (0 x 9.2)  + ( x 9.8 x 9.2²)   = 414.7m

            1m  = 3.28ft

       414.7m  = 414.7 x 3.28 = 1360.3ft

i guess it’s a and b

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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