I need help in my AP Physics task! ?

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  • NCS
    Lv 7
    1 month ago

    1. At shut off,

    h = ½at² = ½ * 20m/s² * (4s)² = 160 m

    and v = at = 20m/s² * 4s = 80 m/s

    At that point it's simply a rising projectile.

    final H = h + v²/(2g) = 160m + (80m/s)² / 19.6m/s² = 487 m

    (one might argue for rounding this to 490 m or even 500 m)

    2. From H = ½gt² we get

    t = √(2H/g) = √(2*487m / 9.8m/s²) = 10 s

    3. v = at = 9.8m/s² * 10s = 98 m/s

    OR

    v = √(2gH) = √(2 * 9.8m/s² * 487m) = 98 m/s

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