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megen505
 2 years 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
megen505
 2 years 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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raane
 2 years ago
Best ResponseYou've already chosen the best response.0u have to find acceleration to find height

raane
 2 years ago
Best ResponseYou've already chosen the best response.0the formula that can be used is v^2=u^2+2as

Shadowys
 2 years ago
Best ResponseYou've already chosen the best response.1\(\vec v_f^2=\vec v_i^2+2\vec a \cdot \vec S\) 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?

raane
 2 years ago
Best ResponseYou've already chosen the best response.0@Shadowys u could've aloud @megen505 to solve this q' her own and understand. at least a chance
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