Description
Which floor did the flowerpot fall off? It passed by the window of a 5th floor apartment in 0,12 sec. The height of the floors is 3m, the windows 1,2m. (The book says the answer is 7th floor. How can I get it?)
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Explanation & Answer
The distance that an object travels under constant acceleration is given by the formula:
distance = 1/2 × acceleration × time2 + intial speed × time
The initial speed is zero because the balls are dropped and not thrown. Therefore, we can solve for time:
let t1 be time to reach the top of window and t2 to reach the bottom of the window.
and let d be the distance it has traveled to reach 5th floor window
now we know. t2-t1 = 0.12 = sqrt(2d/9.8) - sqrt(2(d+1.2)/9.8)
Please solve for d...
Hope it helps.
Thanks
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Mokdad, A. A., Bcheraoui, C. E., Moradi-Lakeh, M., & ..., Afifi, R.
A. (2016). Global
burden of diseases, injuries, and risk factors for young people's
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Disease Study 2013. Lancet, 387(10036), 2383-2401. doi:10.1016/S0140-6736(16)00648-6
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As you think about your issue from a global perspective, what aspects
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interested in and why?What do you think is the most pressing global public health issue we will be facing 50 years from today and why?
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