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 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
 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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raane
 one year ago
Best ResponseYou've already chosen the best response.0u have to find acceleration to find height

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

Shadowys
 one year 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
 one year 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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