Friday

September 19, 2014

September 19, 2014

Posted by **joe** on Monday, September 30, 2013 at 2:50pm.

Part A

If a plane of mass 2.10×105kg is to stop from a speed of 30.0m/s on a 120m long stretch of formcrete, what is the magnitude of the average force exerted on the plane by the formcrete?

- phusics -
**Elena**, Monday, September 30, 2013 at 4:52pma=v²/2s

F=ma=m v²/2s =2.1•10⁵•30²/2•120 = 787500 N

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