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a partical droped from the heighest place of a building. in the final second the particle moved half height of the bulding . what is the height of the building?

a partical droped from the heighest place of a building. in the final second the particle moved half height of the bulding . what is the height of the building?

Grade:12

1 Answers

Sher Mohammad IIT Delhi
askIITians Faculty 174 Points
7 years ago
distance travelled in n seconds, s = 5n^2
                                               v= 10(n-1)
s’= 10(n-1)+ 5 (n-1)^2
s-s’= s/2=  5n^2- 10n+10-5n^2+10n-5=  5= s/2
s=10

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