Anonymous
Anonymous asked in Science & MathematicsPhysics · 3 weeks ago

Physics question - look at photo?

Let me know all three parts please

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3 Answers

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  • NCS
    Lv 7
    3 weeks ago
    Favourite answer

    001/

    v² = u² + 2ah = (45m/s)² + 2 * 2.43m/s² * 211.7m = 3054 m²/s²

    max height

    h = h0 + v² / 2g = 211.7m + 3054m²/s² / 19.6m/s² = 367.5 m

    002/

    during powered phase

    h = v0*t + ½at²

    211.7 = 45t + ½*2.43*t²

    has a positive root at t = 4.22 s

    during unpowered rise

    t' = v/g = √3054 / 9.8 s = 5.64 s

    for a total ascent time of 9.86 s

    003/ time to fall from 367.5 m is

    t" = √(2h/g) = √(2 * 367.5m / 9.8m/s²) = 8.66 s

    for a total flight time of 18.5 s

    Hope this helps!

  • Anonymous
    3 weeks ago

    It’s for homework. What test would be happening on a Sunday? Lmao

  • alex
    Lv 7
    3 weeks ago

    You should not ask exam or test questions 

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