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

[musicxisxlove]

Homework Statement

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?

Homework Equations

I was thinking of using t=d/v.

The Attempt at a Solution

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

 

[LowlyPion]

Homework Statement

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?

Homework Equations

I was thinking of using t=d/v.

The Attempt at a Solution

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

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

Go to this link and see if there aren't some equations that might help you:
https://www.physicsforums.com/showpost.php?p=905663&postcount=2

 

[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.

 

[LowlyPion]

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.

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?