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September 20, 2014

September 20, 2014

Posted by **Jon** on Sunday, March 30, 2008 at 4:23pm.

10)An airplane must achieve a velocity of 71 m/s to takeoff. If the runway is 1000m long, at what speed must the plane constantly accelerate?

0.071 m/s^2

- Physics(check) -
**Quidditch**, Sunday, March 30, 2008 at 5:22pmChecking your answer for 10:

For an initial velocity of 0, final velocity can be expressed as:

V = SQRT(2 * acceleration * distance)

Using your answer of 0.071 m/s:

V = SQRT(2 * (0.071 m/s^2) * 1000m)

V = SQRT( 142.0 m^2/s^2)

V = 11.92 m/s

Uh-oh! Not enough velocity by the end of the runway!

- Physics(check) -
**Jon**, Sunday, March 30, 2008 at 6:18pm2.52 for #10

- Physics(check) -
**Quidditch**, Sunday, March 30, 2008 at 6:25pmYes!

2.52 m/s^2 is what I got also.

- Physics(check) -

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