A stuntman jumps from the roof of a building to a safety net below. How far has the stuntman fallen after 1.6 seconds?

1 Answer
Dec 3, 2015

Answer:

I found #12.5m#

Explanation:

Here you can use the general relationship:
#y_f-y_i=v_it+1/2at^2#
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where #i and f# refer to the initial and final positions: The initial position can be chosen as zero height and with your data, with #v_i=0# and using #g=-9.8m/s^2# (because directed downwards) we get:
#y_f-0=-1/2(9.8)*(1.6)^2#
#y_f=-12.5m# below the starting point at #y_i=0# considered at the origin.