Velocity and height of an arrow

[the whizz]

Homework Statement

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

Homework Equations

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

The Attempt at a Solution

http://img73.imageshack.us/img73/756/problem5answermi7.th.jpg http://g.imageshack.us/thpix.php


ok This format should work well.

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

 

[the whizz]

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

 

[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