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If t ≠ 0 and given the formula x = x_0 + v_0t + 1/2 at^2, which of the

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Joined: 27 Mar 2018
Posts: 11
If t ≠ 0 and given the formula x = x_0 + v_0t + 1/2 at^2, which of the  [#permalink]

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New post Updated on: 18 Sep 2018, 02:26
1
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

86% (00:48) correct 14% (01:15) wrong based on 22 sessions

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If t ≠ 0 and given the formula \(x = x_0 + v_0t + \frac{1}{2} at^2\), which of the following properly expresses the variable a in terms of the other variables in the equation?


A. \(\frac{2(x_0 - x - v_0t)}{t^2}\)

B. \(\frac{2(x - x_0 - v_0t)}{t^2}\)

C. \(\frac{2(v_0t - x + x_0)}{t^2}\)

D. \(\frac{2(x_0 + x - v_0t)}{t^2}\)

E. \(\frac{2(x_0 + x + v_0t)}{t^2}\)


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Originally posted by raycal84 on 17 Sep 2018, 19:20.
Last edited by Bunuel on 18 Sep 2018, 02:26, edited 2 times in total.
Renamed the topic and edited the question.
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Joined: 02 Aug 2009
Posts: 6956
Re: If t ≠ 0 and given the formula x = x_0 + v_0t + 1/2 at^2, which of the  [#permalink]

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New post 17 Sep 2018, 20:38
raycal84 wrote:
Does anyone have any good strategy on tackling a problem like the attached? I mean I look at this and I get a headache. Anyway to see these problems and simplify them?


Please follow proper rules to post a question..

As far as solution, there is nothing much, it is basic algebra and arithmetic operations..
So \(x=x_o+v_ot+at^2/2\)
Subtract \(x_o+v_ot\) from both sides..
\(x-(x_o+v_ot)=at^2/2.........\)
Now multiply both sides by 2/t^2 so that you have only a on one side..
\(\frac{2(x-x_o-v_ot)}{t^2}=a\)

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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


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Re: If t ≠ 0 and given the formula x = x_0 + v_0t + 1/2 at^2, which of the &nbs [#permalink] 17 Sep 2018, 20:38
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