Accelerate from rest, then decelerate to rest: time ratio or total distance

1. A.
   $\frac{4\alpha\beta}{(\alpha + \beta)}t^{2}$
2. B.
   $\frac{2\alpha\beta}{(\alpha + \beta)}t^{2}$
3. C.
   $\frac{\alpha\beta}{2(\alpha + \beta)}t^{2}$
4. D.
   $\frac{\alpha\beta}{4(\alpha + \beta)}t^{2}$

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1. A.
   $\frac{a_{1} + a_{2}}{a_{2}}$
2. B.
   $\frac{a_{2}}{a_{1}}$
3. C.
   $\frac{a_{1} + a_{2}}{a_{1}}$
4. D.
   $\frac{a_{1}}{a_{2}}$

Tap an option to check your answer.