# Velocity and height of an arrow

1. Nov 12, 2008

### the whizz

1. The problem statement, all variables and given/known data

http://img90.imageshack.us/img90/6441/question5cx2.th.jpg [Broken]http://g.imageshack.us/thpix.php [Broken]

2. Relevant equations

k = 898 N/m
m = 90.7g = .0907kg
d = 27 inch = .6558m
g = 9.8 m/s

3. The attempt at a solution

ok This format should work well.

trying to post these right so i can find some help in them.

Last edited by a moderator: May 3, 2017
2. Nov 12, 2008

### the whizz

would like to see if this looks rite before bed...due tomorrow

3. Nov 13, 2008

### LorLor2k6

This is great because I was just having trouble calculating velocity tonight and finally figured it out.

You've got the height right and a short cut I discovered to finding velocity is
that velocity equals the square root of 2xgxh

v=$$\sqrt{}2gh$$ so v=$$\sqrt{}2x9.8x217.55$$

v=65.3m/s