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

A 120 kg man jumps off of a 5 story building (~15 meters). How much force is acted upon his body once he reaches the bottom?

Will he break any bones?

2. Relevant equations

X = (1/2)at^2 (since initial displacement and initial velocity are zero)

so therefore:

a = 2x/t^2

F= ma

3. The attempt at a solution

x = 15

so: a = 20/t^2

F= 120* ( 20/t^2)

How do i solve for time?

thanks

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# Homework Help: Jumping off a building

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