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November 23, 2014

November 23, 2014

Posted by **cram** on Tuesday, October 15, 2013 at 8:21pm.

small plane must reach a ground speed of

40 m/s before it can become airborne.

What average acceleration must the plane’s

engines provide if it is to take off safely from

its airport?

Answer in units of m/s2

- phyics -
**scott**, Tuesday, October 15, 2013 at 10:25pmwith the plane starting from rest and a uniform acceleration, the average velocity is 20 m/s

so the time of acceleration is 184/20 or 9.2 s

the acceleration is (40 m/s) / 9.2 s

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