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November 24, 2014

November 24, 2014

Posted by **Josh** on Sunday, September 17, 2006 at 1:32am.

How far in front of the cattle should the pilot release the hay so that the bales will land at the point where the cattle are stranded?

Don't know!

The help I got last time was not right. But, this problem is confusing so it is very understandable!

Calculate how long (t) it takes the bales to hit the ground when dropped from an altitude of 120 m. The bales have a rather large initial upward velocity component when they are released becasue of the 55 degree flight angle

H = 120 + V sin 55 t - (1/2) g t^2 = 0 when the bales hit the ground. H is the elevation above the groud.

Solve that quadratic equation for t. V = 80 m/s; g = 9.8 m/s^2

The bales will travel a horizontal distance

V cos 55 * t

after release. That will tell you how far ahead of the cattle to release the hay.

what is electrical resistance?

Resistance is a measure of how hard it is to make electricity flow through anything. It is defined as voltage divided by current.

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