Need help with arrow velocity......

[Jericho117]

I was doing tests at the field with my 48# short bow. The arrow I was using had no broadhead or point, just bare blunt. And also had only two fletchings (very accurate indeed, suprisingly). The arrow traveled approx. 75 feet in 0.68 of a second. I do not know an equation that would give me my arrow velocity in fps or mph. My friend stood a at a safe distance while I fired my arrow into a metal can at excactly 75 feet, and he did the best he could to record it with a timer. We did it three times to insure accurate timing and it was good. Also, I was using a sinew string, and since it is highly elastic and absorbs a small fraction of the energy in the bow, I was thinking I should add about 9 or 10 fps extra IF I was using a fiber string that would not stretch. So any help would be much appreciated.

[crashdive123]

111 ft per sec.

[edr730]

divide the seconds into the feet. It's a bit less than 125fps.

[trax]

That's 110.29 feet per second if your measurement was correct. No no, don't stand there gaping son, it's not magic, it's just mathematics...it's quite the rage in some high schools these days.

[edr730]

ok, ok I should of used a pencil. A bit more than a bit less than 125fps.

[Rick]

That's why he hides in the tall pines. He's got an abacus in their clackin' away.

[grundle]

Here is your equation if you want velocity.

V = D/T 

Velocity = Distance/Time

D = 75 feet
T = 0.68 seconds

75/0.68 = 110.294 Feet/Second

Good job trax and crash. The others well....:P

[Rick]

So, restated. Wouldn't VD = time? And, of course, no one has time for VD. Parump bump!

[grundle]

So, restated. Wouldn't VD = time? And, of course, no one has time for VD. Parump bump!

You did your algebra wrong.

V = D/T

TV = D

T = D/V

If you really want to find out what VD is then do the following.

V = D/T

TV = D

T = D * 1/V

(1/V = V^-1) so T = D*V^-1

V^2(T = D*V^-1)

TV^2 = VD

As you can see it is plain that too much TV results in VD.

[crashdive123]

All this talk of VD.......*shudder*

[grundle]

There is a better equation for time, now that I think of it.

Time = Money

Women = Time*Money

If we substitute Time for Money in our second 
equation (they are equivalent) that means

Women = Money * Money  

or

Women = Money^2  (read that as Money squared)

Since we know that 

Money = (Evil)^1/2 [That reads as Money = Squareroot of Evil)

Then we can say

Women = Evil

[crashdive123]

Good luck with that. What's that dear? No, I'm not reading nuthin. Really, it's nothing. *smack*

[Rick]

(slowly backing away from computer....)

[trax]

All this talk of VD.......*shudder*

Spoken like a truel sailor....

[nell67]

There is a better equation for time, now that I think of it.

Time = Money
 
Women = Time*Money
 
If we substitute Time for Money in our second 
equation (they are equivalent) that means
 
Women = Money * Money  
 
or
 
Women = Money^2  (read that as Money squared)
 
Since we know that 
 
Money = (Evil)^1/2 [That reads as Money = Squareroot of Evil)
 
Then we can say
 
Women = Evil

hhmmm,someones not happy in his relationship today,maybe I should just call his significant other and have a little chat with her.....

[Runs With Beer]

That's why he hides in the tall pines. He's got an abacus in their clackin' away.

Man that wasa goodun

[sh4d0wm4573ri7]

lmao uhuh i likes that one by god

[Rick]

Thank you. Thank you. You can catch my show at 4 and 7 daily.

[trax]

Thank you. Thank you. You can catch my show at 4 and 7 daily.

Is that advertising or a warning?

[Jericho117]

Thanks guys. My arrows appear to be somewhat equivalent to the Native American bows ( A book on "Arrow Poisons" stated that there bows only went 36 meters per second). Needless to say, they seem faster than they really are. Im actually slightly dissapointed in this arrow velocity, but like I said the sinew string plays a role, a small one, but it affects velocity. So im looking at around a 120 Fps with a fiber string- thanks again.