anonymous
  • anonymous
s(t)=-4.9t+vt+s A projectile is shot upward from the surface of Earth with an initial velocity of 120 meters per sec. What is its velocity ater 5 seconds? After 10 seconds?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
\[s(t)=-4.9t+v _{0}t+s _{0}\]
amistre64
  • amistre64
derivative should give velocity
amistre64
  • amistre64
v(t) = -9.8t + 120

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amistre64
  • amistre64
solve for t=5 and t = 10
anonymous
  • anonymous
how did you get that derivative?
anonymous
  • anonymous
ok i get 4.9(2)t is the derivative of 4.9t^6
anonymous
  • anonymous
but why wouldnt 120 become 0 since it is a constant?
anonymous
  • anonymous
oh wait it would be 120t wouldnt it?

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