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anonymous

  • one year ago

A model rocket is launched from the ground with an initial velocity of 352 ft/sec. How long will it take the rocket to reach its maximum height? Show all work in the space provided.

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  1. anonymous
    • one year ago
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    @welshfella

  2. welshfella
    • one year ago
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    use one of the equations for motion at constant acceleration initial velocity u = 352, acceleration a = -32, v = 0 and s = distance so we use v^2 = u^2 + 2as solve for s

  3. anonymous
    • one year ago
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    10.9 seconds? @welshfella

  4. welshfella
    • one year ago
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    ??? - the answer is a distance - there is no time involved in this formula

  5. anonymous
    • one year ago
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    It says how long does it take to reach it's maximum height

  6. welshfella
    • one year ago
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    oh ! sorry - i misread the question use the v = u + at 0 = 352 - 32t

  7. welshfella
    • one year ago
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    t = 352/32 = ?

  8. anonymous
    • one year ago
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    11 seconds. @welshfella

  9. welshfella
    • one year ago
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    right on

  10. anonymous
    • one year ago
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    Thanks :)

  11. welshfella
    • one year ago
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    yw

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