A airplane diving at angle of 37° with the horizontal drops a mail bag at an altitude of 730 m. The projectile hits the ground 5.0 s after b

Question

A airplane diving at angle of 37° with the horizontal drops a mail bag at an altitude of 730 m. The projectile hits the ground 5.0 s after being released. What is the speed of the air craft?

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Thành Công 5 years 2021-07-12T17:01:05+00:00 1 Answers 652 views 1

Answers ( )

  1. Verity
    4
    2021-07-12T17:02:57+00:00
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    Answer:

    200 m/s

    Explanation:

    s = s₀ + v₀t + ½at²

    If the origin is at the airplane drop point and UP is the positive direction.

    In the vertical plane

    -730 = 0 + v₀(5.0) + ½(-9.8)(5.0)²

    v₀ = -121.5 m/s

    sin (- 37) = -121.5/v

    v = 201.88927… ≈ 200 m/s

    to 2 significant digits of the question numerals

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