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babunello [35]
3 years ago
15

What speed must you toss a ball straight up so that it takes 4 s to return to you? Show your work.

Mathematics
1 answer:
vekshin13 years ago
4 0
1) Type of  motion: constant acceleration.
 
2) acceleration, a = 9.8 m/s^2

3) time up = time down = 4seconds / 2 = 2 seconds

4) formula = Vf = Vo - a*t^2/2

Vf = 0 => Vo = a*t^2 / 2 = 9.8m/s^2 * (2 s)^2 / 2 = 19.6 m/s

Answer: 19.6 m/s
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djverab [1.8K]
Assuming yo meant
f(x)=(1/3)4x²


sub 4 for x
f(4)=(1/3)4(4)²
f(4)=(1/3)4(16)
f(4)=(1/3)64
f(4)=64/3


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3 years ago
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Answer:

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The response variable is the variable that depends on other variables such as the independent or explanatory variable, it is the variable that is being tested. The response variable is also called the dependent variable.

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8 0
3 years ago
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7 0
3 years ago
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7 0
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If you put $1000 for monthly interest, the saving account would become: ($1000*(100%+0.125%)= $1000*1.0151035559= $1015.10

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