a penny is dropped from a height of 196 feet off a bridge the function D equals -16 2 T ^ 2 + 196 models the distance D in feet the penny is from the surface of the water at time T seconds graph this function then use your graph to estimate the time it will take for the penny to reach the water
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Given : a penny is dropped from a height of 196 feet off a bridge the function D= -16T² + 196 models the distance D in feet the penny is from the surface of the water at time T seconds
To Find : graph this function
use your graph to estimate the time it will take for the penny to reach the water
Solution:
D= -16T² + 196
T D
0 196
1 180
2 132
3 52
4 -60
From Graph around penny takes 3.5 sec to reach the water
From calculation
-16T² + 196 = 0
=> T²= 196/16
=> T²= 49/4
=> T = 7/2
=> T = 3.5 sec
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