the height of the tower, Mathematics

 A Stone is dropped from the top of the tower and travel 24.5 m in last second of its journey. the height of the tower is ...?

Posted Date: 3/30/2013 5:45:53 AM | Location : United States





Distance travelled at nth sec=u + a/2(2t-1)

so here 24.5=0+4.9(2t-1)

hence t=3 secs

it takes 3 secs to reach the bottom so height=1/2gt^2

H=4.9x9=44.1 m(ANS)

Posted by Robert Dikosa | Posted Date: 3/30/2013 5:46:11 AM


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