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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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Intern
Joined: 27 Mar 2018
Posts: 10
If t ≠ 0 and given the formula x = x_0 + v_0t + 1/2 at^2, which of the  [#permalink]

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Updated on: 18 Sep 2018, 01:26
2
00:00

Difficulty:

15% (low)

Question Stats:

88% (00:49) correct 13% (01:15) wrong based on 24 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. $$\frac{2(x_0 + x + v_0t)}{t^2}$$

Attachment:

Screenshot_2018-09-17 Target Test Prep - GMAT.png [ 36.18 KiB | Viewed 271 times ]

Originally posted by raycal84 on 17 Sep 2018, 18:20.
Last edited by Bunuel on 18 Sep 2018, 01:26, edited 2 times in total.
Renamed the topic and edited the question.
Math Expert
Joined: 02 Aug 2009
Posts: 7213
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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17 Sep 2018, 19:38
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?

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..
$$\frac{2(x-x_o-v_ot)}{t^2}=a$$

B
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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, 19:38
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