Aball is dropped from a cliff that is 256 feet high. the height of the ball (in feet) after t seconds is given by the formula h(t) = 256 - 16t^2. how many seconds (to the nearest tenth) will it take for the ball to hit the ground? a. 4096 sec b. 16sec c. 15.5 sec d. 4 sec

t = 4 sec

Explanation:

given,

height of the cliff = 256 ft

equation of height and time

h(t) = 256 - 16 t²

time at which the ball hit the ground = ?

when the ball hit the ground height of the cliff is equal to zero

h(t) = 0                

now,              

0 = 256 - 16 t²      

16 t² = 256          

t² = 16                  

t = 4 sec        

hence, height of the ball will be equal to zero when time is 4 seconds.

a.) is the correct answer.

explanation:

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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