Homework Help: Science

Posted by Layla on Sunday, October 5, 2008 at 7:12pm.

how do you calculate if a block of wood dropped form a tall building has attained a velocity of of 78.4 m/s, how long has it been falling?

Science - bobpursley, Sunday, October 5, 2008 at 7:14pm
I dont understand the question.
Science - LAUREN, Wednesday, December 2, 2009 at 6:24pm
if gravity is rounded to 10 and 78.4 is rounded to 78:

-then, time= velocity/gravity

time=78/10
time=7.8

or...
time=78.4/9.8
time= 8

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