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  1. (Vf)^2 = (Vi)^2 2aΔd Since the airplane comes to a stop, the final velocity, Vf is zero. So, Vi = √(-2aΔd) = √(-2(-8)(484)) = 88 m/s

    4 Answers · Science & Mathematics · 18/01/2017

  2. . tanθ = 30sin45° / (700 - 30cos45°) tanθ = 0.03125 θ = arctan(0.03125) θ = 1.79° ———— v/sin45° = 30/sin1.79° v = 30sin45°/sin1.79° v = 679.2 km/hr ———————

    3 Answers · Science & Mathematics · 08/01/2017

  3. The Pythagorean theorem applies. .. d = √((28 ft)^2 +(25 ft)^2)) = √((784 +625) ft^2) .. = (√1409) ft ≈ 37.5 ft

    2 Answers · Science & Mathematics · 01/01/2017

  4. You are absolutely correct my friend. Last year there was a rumour that things will be more democratic from now on and indeed there have been significant changes in the body of the Nobel Prize Committee . We shall...

    2 Answers · Science & Mathematics · 13/12/2016

  5. Taking the East direction as the x-axis, the first plane has an angle 70° above the x-axis, and the second plane, 40° below the x-axis, so the angle between them is 110° In 3 hrs, 1st plane travels 3*427 = 1281 mi, and the 2nd plane, 3...

    1 Answers · Science & Mathematics · 05/12/2016

  6. t = temperature rise Original length = 6240 cm 29 = 6240*2.40t/10^5 t = 29*10^5/[2.4*6240] = 193.6 C T = 15+193.6 = 208.6 C

    1 Answers · Science & Mathematics · 04/12/2016

  7. If the speed of the plane is P, and the speed of the wind is W, then using the distance equation: distance = rate * time 500 = (P+W) * 2 500 = (P-W) * 3 500 = 2P + 2W 500 = 3P - 3W Multiply the top equation by 3 and...

    3 Answers · Science & Mathematics · 08/11/2016

  8. Let x represent the horizontal distance from the airplane to the observer. Then .. x = 2*cot(θ) .. x' = -2*csc(θ)^2*θ' .. θ...

    2 Answers · Science & Mathematics · 12/10/2016

  9. Define variables, generally choosing ones that are related to the quantities you are asked to find. Then write the relationships described by the problem statement. You are...

    1 Answers · Science & Mathematics · 29/09/2016

  10. f + t = 63 & 5f + 20 t = 885...from the 1st : t = 63 - f...put it into the 2nd and solve 80 = 32 t...find t....difference in speed is 32

    1 Answers · Science & Mathematics · 02/11/2016

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