why did the united states and the soviet union begin experimenting with and trying to improve the v-2 rocket ?

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Explanation:

why did the united states and the soviet union begin experimenting with and trying to improve the v-2 rocket ?

answer; ///i believe that the correct answer is (45*) at a 45 degree check first good

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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