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# x=(1/4)sv^2 In the formula shown, if x/s = 25 and v > 0, what is the v

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Senior Manager
Joined: 24 Oct 2016
Posts: 262
GMAT 1: 670 Q46 V36
x=(1/4)sv^2 In the formula shown, if x/s = 25 and v > 0, what is the v  [#permalink]

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25 Aug 2018, 08:47
00:00

Difficulty:

5% (low)

Question Stats:

98% (00:45) correct 2% (00:27) wrong based on 43 sessions

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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

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Director
Joined: 20 Feb 2015
Posts: 795
Concentration: Strategy, General Management
Re: x=(1/4)sv^2 In the formula shown, if x/s = 25 and v > 0, what is the v  [#permalink]

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25 Aug 2018, 09:37
dabaobao wrote:
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 = $$\frac{sv^2}{4}$$
also
x=25s
substituting the values
25s=$$\frac{sv^2}{4}$$
v^2=100
v=10
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Location: India
GPA: 3.5
Re: x=(1/4)sv^2 In the formula shown, if x/s = 25 and v > 0, what is the v  [#permalink]

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25 Aug 2018, 10:07
dabaobao wrote:
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

$$x=(\frac{1}{4})sv^2$$

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)
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Re: x=(1/4)sv^2 In the formula shown, if x/s = 25 and v > 0, what is the v &nbs [#permalink] 25 Aug 2018, 10:07
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