1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Air Plane question

  1. Mar 3, 2009 #1
    A fully loaded air plane with a mass of 330.2 tonnes is at one end of the runway and about to take off. Assume that the plane starts from rest with constant acceleration until it reaches the take-off speed of 85.81 ms-1. The air plane uses two jet engines each developing 456.7 kN thrust at full power. Neglect air resistance and friction between the tires and the runway.

    Calculate the length of the runway, in metres, required for take-off.

    Any idea how I can be able to start and solve this questions? Hints please.
  2. jcsd
  3. Mar 3, 2009 #2


    User Avatar
    Homework Helper

    Hi Synergy80, welcome to PF

    your probelm says the plane:
    starts at rest (v0 = 0)
    moves with constant acceleration,
    and you know the power and the final velocity...

    any idea how to relate a, P and v?
    try and show some working
    Last edited: Mar 3, 2009
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook