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November 23, 2014

November 23, 2014

Posted by **shirley** on Tuesday, September 29, 2009 at 1:10am.

- physics -
**jim**, Tuesday, September 29, 2009 at 5:20amStart by calculating the acceleration of the plane as it moves from rest to take-off. It gets up to 80 m/s in 35 seconds, so its acceleration is 80/35 m/s^2.

Now you can just plug in the formula for distance travelled under acceleration = ut + 0.5at^2.

Initial velocity u is zero. We've worked out the acceleration, and we know that t=35sec. The rest is easy.

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