Physics AP - Blow Gun Lab (#7)

Background:
The blowgun was fired a 0° with the horizontal.  So there is no Viy
only Vx.  The gun was aimed at a target so it would hit it the middle
if there were no gravity.  The velocity of the dart is depending on
how hard you blow.  

Problem:
What angle does it hit the cardboard target and find Vf.

Procedure:
First get in a group of three or two.  Then choose one person to fire
the blowgun.  Once you have fired the gun measure the distance from
the middle of the target (Dy).  From that calculate Vix, Aingun,
Tingun, angle dart hit the cardboard, and Vf.

Data:
X            Y               In Gun
D=8m         D=-.46m         D=.7m
V=25.8m/s    Vi=0m/s         Vi=0m/s
A=0m/sē      Vf=-3.00m/s     Vf=25.8m/s
T=.31s       T=-.31s         A=18.4m/sē
             A=-9.8m/sē      T=1.4s

Conclusion/Analysis:
The angle when the dart hit the cardboard is 6.6° Vf is 26.0m/sē. The
faster you blow the gun the less the angle and less the Dy.