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25 Aug 2018, 09:47
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Difficulty:
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Question Stats:
97% (00:50) correct
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x=(1/4)sv^2
In the formula shown, if x/s = 25 and v > 0, what is the value of v ?
A) 9
B) 10
C) 11
D) 29
E) 100
In the formula shown, if x/s = 25 and v > 0, what is the value of v ?
A) 9
B) 10
C) 11
D) 29
E) 100
25 Aug 2018, 10:37
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dabaobao
x=(1/4)sv^2
In the formula shown, if x/s = 25 and v > 0, what is the value of v ?
A) 9
B) 10
C) 11
D) 29
E) 100
In the formula shown, if x/s = 25 and v > 0, what is the value of v ?
A) 9
B) 10
C) 11
D) 29
E) 100
x = \(\frac{sv^2}{4}\)
also
x=25s
substituting the values
25s=\(\frac{sv^2}{4}\)
v^2=100
v=10
General Discussion
25 Aug 2018, 11:07
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dabaobao
x=(1/4)sv^2
In the formula shown, if x/s = 25 and v > 0, what is the value of v ?
A) 9
B) 10
C) 11
D) 29
E) 100
\(x=(\frac{1}{4})sv^2\)In the formula shown, if x/s = 25 and v > 0, what is the value of v ?
A) 9
B) 10
C) 11
D) 29
E) 100
Or, \(\frac{x}{s} = (\frac{1}{4})v^2\)
Or, \(25 = (\frac{v^2}{4})\)
Or, \(v^2 = 100\)
So, \(v = 10\) , as \(v > 0\) , Answer must be (B)
