anonymous
  • anonymous
question
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
0=h+v0 *t+ 1/2 a t^2 0=h+ 0*8+ 1/2 *9.8 (9) another equation for quater height h-h/4=h+0*t+ 1/2 * 9.8* (t^2) -h/4= 1/2 *9.8 *t^2 now solve for t
Diyadiya
  • Diyadiya
how will i find h and t together?
anonymous
  • anonymous
solve for h using first equation 0=h+ 0*8+ 1/2 *9.8 (8)^2 -h= 0*8+ 1/2 *9.8 (8)^2 h=-(0*8+ 1/2 *9.8 (8)^2)

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anonymous
  • anonymous
then use that to solve for t in second equation . I let the computer do it and I got 4 for t http://www.wolframalpha.com/input/?i=Solve%5B0%3Dh%2B%281%2F2*9.8*%288%29%5E2%29%2C-h%2F4%3D%281%2F2%29*9.8*t%5E2%5D
Diyadiya
  • Diyadiya
yeah 4 is the answer
Diyadiya
  • Diyadiya
wait come to physics
Diyadiya
  • Diyadiya
what ? i didnt get you
experimentX
  • experimentX
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