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August 22, 2014

August 22, 2014

Posted by **David** on Sunday, January 23, 2011 at 10:48pm.

I have been trying the formula vf^2=Vi^2+2AD and solving for A

SO my work has been

185^2=0^2+2A(467)

34225/934=A

36.643=A

I'm assuming my mistake is using speed as Vf but not sure how else to do it. TIA

- Physics -
**Quidditch**, Sunday, January 23, 2011 at 11:03pmBe careful of units.

You expressed the runway length in m (meters), but the takeoff speed is expressed in mi/h (miles/hour). You will need to do some units conversion.

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