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ChrisV

  • 2 years ago

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?

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  1. ChrisV
    • 2 years ago
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    \[s(t)=-4.9t+v _{0}t+s _{0}\]

  2. amistre64
    • 2 years ago
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    derivative should give velocity

  3. amistre64
    • 2 years ago
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    v(t) = -9.8t + 120

  4. amistre64
    • 2 years ago
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    solve for t=5 and t = 10

  5. ChrisV
    • 2 years ago
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    how did you get that derivative?

  6. ChrisV
    • 2 years ago
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    ok i get 4.9(2)t is the derivative of 4.9t^6

  7. ChrisV
    • 2 years ago
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    but why wouldnt 120 become 0 since it is a constant?

  8. ChrisV
    • 2 years ago
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    oh wait it would be 120t wouldnt it?

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