help_people
  • help_people
Amir pitches a baseball at an initial height of 6 feet, with a velocity of 73 feet per second. If the batter misses, about how long does it take the ball hit the ground? Hint: Use H(t) = −16t2 + vt + s. 4.64 seconds 2.94 seconds 2.28 seconds 0.08 second
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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welshfella
  • welshfella
when the ball hits the ground H(t) = 0
welshfella
  • welshfella
so plug in 0 for H(t) , 6 for s and 73 for v, then solve for t.
help_people
  • help_people
h(0)=-16t^2+73t+6? @welshfella

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help_people
  • help_people
then i would solve for t which i will do in a sec
help_people
  • help_people
t=250/73?
welshfella
  • welshfella
i got a different value
welshfella
  • welshfella
250/73 = 3.42
welshfella
  • welshfella
did you use the quadratic formula?
welshfella
  • welshfella
x = [ -73 +/- sqrt(73^2 - 4*-16*6) ] / (2*-16)
help_people
  • help_people
oh ok its not different you just divided lol
help_people
  • help_people
what would i do after?
welshfella
  • welshfella
= (-73 - 75.58) / -32 = 4.64
welshfella
  • welshfella
73^2 - 4*-16*6 comes to 5713 and sqrt 5713 = 75.58
welshfella
  • welshfella
- the other root is 0.08 which we can ignore
help_people
  • help_people
ok
welshfella
  • welshfella
- sorry it was -0.08 which of course we can ignore
help_people
  • help_people
ok so the answer would be 4.64? based on what you have explained/said
welshfella
  • welshfella
yes
welshfella
  • welshfella
the other root is negative - the correct time is 4.64 seconds
help_people
  • help_people
ty! :)
welshfella
  • welshfella
yw

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