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Which equation can be used to solve for acceleration?

A. [tex]t = \frac{\Delta v}{a}[/tex]

B. [tex]v_f = at - v[/tex]

C. [tex]a = \frac{d}{t}[/tex]

D. [tex]\Delta v = \frac{a}{t}[/tex]


Sagot :

To find the correct equation for acceleration, let's go through each option step by step:

### Option 1: [tex]\( t = \frac{\Delta v}{a} \)[/tex]

1. Start with the formula:
[tex]\[ t = \frac{\Delta v}{a} \][/tex]

2. Rearrange this equation to solve for [tex]\( a \)[/tex] (acceleration):
[tex]\[ a = \frac{\Delta v}{t} \][/tex]

### Option 2: [tex]\( v_f = a t - v \)[/tex]

1. Start with the formula:
[tex]\[ v_f = a t - v \][/tex]

2. Rearrange this equation to solve for [tex]\( a \)[/tex] (acceleration):
[tex]\[ v_f + v = a t \][/tex]
[tex]\[ a = \frac{v_f + v}{t} \][/tex]

### Option 3: [tex]\( a = \frac{d}{t} \)[/tex]

1. The formula is already solved for [tex]\( a \)[/tex]:
[tex]\[ a = \frac{d}{t} \][/tex]

However, note that this formula relates distance ([tex]\( d \)[/tex]) and time ([tex]\( t \)[/tex]). Acceleration typically relates to the change in velocity over time, not purely distance over time.

### Option 4: [tex]\( \Delta v = \frac{a}{t} \)[/tex]

1. Start with the formula:
[tex]\[ \Delta v = \frac{a}{t} \][/tex]

2. Rearrange this equation to solve for [tex]\( a \)[/tex] (acceleration):
[tex]\[ a = \Delta v \times t \][/tex]

### Conclusion:

In classical mechanics, the correct and most commonly used equation for acceleration ([tex]\( a \)[/tex]) in terms of the change in velocity ([tex]\( \Delta v \)[/tex]) over time ([tex]\( t \)[/tex]) is:
[tex]\[ a = \frac{\Delta v}{t} \][/tex]

From the given options, the correct equation for acceleration is obtained by rearranging Option 1. Therefore, the correct option is:

[tex]\[ \boxed{1} \][/tex]
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