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April 1, 2015

April 1, 2015

Posted by **jasmine** on Friday, October 4, 2013 at 1:20pm.

- physics -
**Elena**, Friday, October 4, 2013 at 2:09pmma=T-mg

a=(T/m)-g= 19.5 – 9.8 = 9.7 m/s²

h=at²/2=>

t=2h/a = 2•10/9.7 = 2.06 s.

- physics -
**Juan**, Friday, January 30, 2015 at 6:42amthe above solution is correct except for the very last part. They did not take into account that it should have been:

t^2=(2h/a)

sqrt(t^2)=sqrt(2.06)

t=1.44

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