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Nick2019

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?

  • one year ago
  • one year ago

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  1. Rohangrr
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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.

    • one year ago
  2. johnnyle530
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    lol!

    • one year ago
  3. Nick2019
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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

    • one year ago
  4. Rohangrr
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    some options are available or not

    • one year ago
  5. Nick2019
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    ^^^ i put them

    • one year ago
  6. Rohangrr
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    kk

    • one year ago
  7. lgbasallote
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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

    • one year ago
  8. lgbasallote
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    obviously that wont work ;)

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

    • one year ago
  10. lgbasallote
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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?

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

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

    • one year ago
  13. Nick2019
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    o ok thanks for the help guys

    • one year ago
  14. lgbasallote
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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

    • one year ago
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