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August 31, 2014

Homework Help: Physics

Posted by Heather on Thursday, November 3, 2011 at 6:17pm.

A projectile of mass 0.800 kg is shot straight up with an initial speed of 28.0 m/s.
(a) How high would it go if there were no air friction?
(b) If the projectile rises to a maximum height of only 26.8 m, determine the magnitude of the average force due to air resistance.

I got the correct answer for part A, it's part B that's giving me trouble. I tried using 1/2 mv2=Fd but it seems that I'm missing something.

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