From what height was the pot dropped at?

  • Thread starter Fentow
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  • #1
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Homework Statement


A falling flowerpot takes 0.2s to fall past a window which is 1.9m above ground. From what height was the pot dropped at?


Homework Equations


d = v1*t + (1/2)at^2


The Attempt at a Solution


I'm not sure what to do with the 1.9m above ground...

D = 0*0.2 + (1/2)(9.8m/s^2)(0.2)^2
D = 0.196

The book answer is 3.7m though, which is way off. I'm sure I have to use 1.9m to find the answer, but I'm at a loss right now. Help! Please and thank you!
 

Answers and Replies

  • #2
Chi Meson
Science Advisor
Homework Helper
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The flower pot has already been falling for some time before it passes the top of the window.

There are three things you know about this situation: acceleration, time to pass window, and vertical distance of window. What can this information tell you about how fast it was moving at the top of the window?
 

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