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anonymous

  • one year ago

Please help! Will fan & medal!! A model rocket is launched from the ground with an initial velocity of 288 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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    @dan815

  2. welshfella
    • one year ago
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    to do this youy use one of the equations for constant acceleration the acceleration in this case is that due to gravity which = 32 ft s-2 in this case we use -32 bacause it is acting against the motion of the rocket

  3. welshfella
    • one year ago
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    use the formula v = u + at At maximum height the velocity v = 0 , a the acceleration = -32 , the initial velocity = 288 ft/sec and t is the required time solve for t

  4. welshfella
    • one year ago
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    initial velocity = u

  5. anonymous
    • one year ago
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    Is it 9?

  6. welshfella
    • one year ago
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    so just plug those values into the formula

  7. welshfella
    • one year ago
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    0 = 288 -32t 32t = 288 t = 9 seconds yes

  8. anonymous
    • one year ago
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    Thank you! You helped explained it good. Could I ask another question? I'll make sure to close this one.

  9. welshfella
    • one year ago
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    ok

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