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megen505

  • one year ago

A balloonist happens to drop his metal ballpoint pen from his balloon as he is taking notes on his flight. Because his pen has a streamlined shape, air resistance has little effect on its fall. The pen strikes the ground at 22 m/s. How high was the balloon? (Points : 6) 25 m 49 m 850 m 9,500 m

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  1. raane
    • one year ago
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    u have to find acceleration to find height

  2. raane
    • one year ago
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    the formula that can be used is v^2=u^2+2as

  3. raane
    • one year ago
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    wht is your answer

  4. Shadowys
    • one year ago
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    \(\vec v_f^2=\vec v_i^2+2\vec a \cdot \vec S\) since \(\vec v_i=0\hat j\),\(\vec v_f=-22\hat j\),\(\vec a=-10\hat j \), plug it in to get, \((-22\hat j)^2=2(-10\hat j) \cdot \vec S\) \(\vec S=-24.2\hat j\) do you need further help?

  5. raane
    • one year ago
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    @Shadowys u could've aloud @megen505 to solve this q' her own and understand. at least a chance

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