How long does it take for the dart to travel the length of the barrel?

1. Aug 17, 2008

musicxisxlove

1. The problem statement, all variables and given/known data
The length of the barrel of a primitive blowgun is 1.5 m. Upon leaving the barrel, a dart has a speed of 12 m/s. Assuming that the dart is uniformly accelerated, how long does it take for the dart to travel the length of the barrel?

2. Relevant equations

I was thinking of using t=d/v.

3. The attempt at a solution
So it might be t=1.5/12
t= .125 s? but that doesn't sound right at all.

2. Aug 17, 2008

LowlyPion

The dart is uniformly accelerated. Your approach would not satisfy this condition.

https://www.physicsforums.com/showpost.php?p=905663&postcount=2

3. Aug 17, 2008

musicxisxlove

Oh... I see. Hm... my teacher didn't exactly cover any of the problems that he assigned to us except questions about displacement. I don't know how to even start this out.

4. Aug 17, 2008

LowlyPion

Look at the equations at the link I gave.

You are given Velocity at a distance from the start of the pipe. You can figure it started at rest when it left Sharpie the Blow Man's lips. Perhaps you can figure the acceleration and from that figure the time?