# Pigmee darts

1. Dec 17, 2006

### LezardValeth

Pygmies use blow-guns and 15 gram (0.015 kg) darts dipped in the poison curare to immobilize and kill monkeys that live in the tree-top canopy of their forest home. Assume a pygmy at ground level blows a dark at 85 degrees (relative to the horizontal) at a monkey that is 35 vertical meters up. Assuming a dart must be moving at 4m/s to effectively pierce a monkey skin, what is the minimum velocity the dart must be moving as it leaves the blow-gun if it is to pierce the monkey?

now I know that Ill have to use delta KE to find the minimum velocity but Im not quite sure what to do with the vertical height and the degrees

2. Dec 18, 2006

### vanesch

Staff Emeritus
I moved this post to a new thread ; don't hijack threads of other posters for your own homework problems ; start a new thread.

Also, provide some work on it before we help...

3. Dec 18, 2006

### Staff: Mentor

In problems like this, what can you say about the relationship between KE and PE?