My question isn't how to solve the problem exactly. In fact, it's already been solved on this website. My question is about the acceleration. When I solve this problem myself, first I calculate the velocity by dividing 100m by 53s. I get 1.89m/s. Then I use that to find the acceleration using the equation vf = vi + at. That's 1.89/53 = 0.036m/s^2.That's not correct. The correct way to find the acceleration is to us the equation d = 1/2 at^2 and solve that way without taking the intermediate step of finding the velocity. Doing it that way, the acceleration is 0.0712m/s^2. My question is why you get a different result doing it the first way than you get doing it the second way. It's possible for a determined group of people to pull an aircraft.Drag is negligible at low speeds, and the only force impedingmotion is the rolling friction of the rubber tires on the concreterunway. In 2000, a team of 60 British police officers set a worldrecord by pulling a Boeing 747, with a mass of 200,000 kg, adistance of 100 m in 53 s. The plane started at rest. Supposethat = 0.02.(Figure 1)▼Part AEstimate the force with which each officer pulled on the plane, assuming constant pulling force and constant acceleration.Express your answer with the appropriate units.F = 900 NSubmitPrevious Answers

Basic concept of velocity and acceleration: Velocity of an object is defined as product of distance…

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Chapter1: Units, Trigonometry. And Vectors

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My question isn't how to solve the problem exactly. In fact, it's already been solved on this website. My question is about the acceleration. When I solve this problem myself, first I calculate the velocity by dividing 100m by 53s. I get 1.89m/s. Then I use that to find the acceleration using the equation v_f = v_i + at. That's 1.89/53 = 0.036m/s^2.

That's not correct. The correct way to find the acceleration is to us the equation d = 1/2 at^2 and solve that way without taking the intermediate step of finding the velocity. Doing it that way, the acceleration is 0.0712m/s^2.

My question is why you get a different result doing it the first way than you get doing it the second way.

It's possible for a determined group of people to pull an aircraft.
Drag is negligible at low speeds, and the only force impeding
motion is the rolling friction of the rubber tires on the concrete
runway. In 2000, a team of 60 British police officers set a world
record by pulling a Boeing 747, with a mass of 200,000 kg, a
distance of 100 m in 53 s. The plane started at rest. Suppose
that = 0.02.
(Figure 1)
▼
Part A
Estimate the force with which each officer pulled on the plane, assuming constant pulling force and constant acceleration.
Express your answer with the appropriate units.
F = 900 N
Submit
Previous Answers

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