Homework Help: Physics

Posted by Lindsay on Sunday, November 4, 2007 at 2:07pm.

A helicopter is flying in a straight line over a level field at a constant speed of 21.7 m/s and at a constant altitude of 11.5 m. A package is ejected horizontally from the helicopter with an initial speed of 21.6 m/s relative to the helicopter, and a direction opposite to the helicopter's motion. Find the initial speed of the package relative to the ground.

I thought I knew how to do this...until I saw that they give an altitude. Can someone give me the first steps? I can probably get it after that.

Physics - bobpursley, Sunday, November 4, 2007 at 2:49pm
The altitude has nothing to do with intial speed.

Vrelative ground= Vhelo+ Vrelathelo
= 21.7m/s - 21.6 negative sign means opposite direction. = .1m/s in direction of helo flight.
Physics - cool, Monday, February 16, 2009 at 6:48pm
i don't really know.

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