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Nick2019

  • 2 years ago

Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately, how long does it take until the soccer ball hits the ground again?

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  1. Rohangrr
    • 2 years ago
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    Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately what maximum height does the soccer ball reach? I think this can not be solve due to lack of data.

  2. johnnyle530
    • 2 years ago
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    lol!

  3. Nick2019
    • 2 years ago
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    Here's the for choices a 1.3 secs b 2.6 secs c 16.0 secs d 27.6 secs

  4. Rohangrr
    • 2 years ago
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    some options are available or not

  5. Nick2019
    • 2 years ago
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    ^^^ i put them

  6. Rohangrr
    • 2 years ago
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    kk

  7. lgbasallote
    • 2 years ago
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    use the formula to get maximum height first \[S_2 - S_1 = V_1 t + \frac12 at\] s2 is the maximum height = not given s1 is initial height = 0 V1 is the initial velocity = 42 a = -9.8 m/s^2 t = time =not given

  8. lgbasallote
    • 2 years ago
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    obviously that wont work ;)

  9. Jonask
    • 2 years ago
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    you have to deal with two components of the balls motion ie vertical and horizontal

  10. lgbasallote
    • 2 years ago
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    use another formula \[V_2 = V_1 + at\] v2 is final speed which will be 0 because v = 0 at max height v1 = 42 a = -9.8 now solve this... \[0 = 42 -9.8t\] \[9.8t = 42\] can you solve for t?

  11. Nick2019
    • 2 years ago
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    No this is for my bro i dont know how to

  12. lgbasallote
    • 2 years ago
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    hmm if you look closely..that last step is just algebra...

  13. Nick2019
    • 2 years ago
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    o ok thanks for the help guys

  14. lgbasallote
    • 2 years ago
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    btw...you need to multiply the time you get from that by 2 because the one we got was just the first half

  15. math-hepl-plz
    • 4 months ago
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    I got 8.6 and thats not one of the answers.

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