When the firecracker hits the ground, H(t) = 0.0 = -16t^2 + 90t + 160 Using the quadratic formula,t = (-90 +- sqrt(90^2 - 4(-16)(160))) / 2(-16)t = -1.42 ort = 7.04
The negative time is extraneous. Therefore,t = 7.04 s.
Seven Seconds is your answer!
Answer:
T15 = 31
Step-by-step explanation:
Its in the picture
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Answer:
5 4 3 2 1 0 -1 -2 -3 -4 -5
Step-by-step explanation:
Answer:
Step-by-step explanation:
1.44x2.2=3.168 pounds
Pressure and Volume are inversely related as:

We can also write it as:

R is the constant of proportionality. Using the first row of given table, we can write:
Thus, the value of R, the universal gas constant is 8.31