(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

45. A freely falling object requires 1.50 s to travel the last 30.0 m before it hits the ground. From what height above the ground did it fall?

2. Relevant equations

x = xi + Vit + (1/2)at^{2 }

Vf^{2}= Vi^{2}+ 2ad

3. The attempt at a solution

First found the initial velocity from 30.0 m left

30m = 0m + Vi (1.5 sec) + (1/2) (-9.81 m/s2) (1.5 sec)^{2}

Vi= 27.36 m/s at 30 m away from ground

Distance from original height to 30 m left

(27.36 m/s)^{2}= (0 m/s)^{2}+ 2 (-9.8a m/s2) d

-38.15 m = d

total distance = 68.15 m

I hope this is right! Thank you!

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# Homework Help: Free Fall Questions

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