Making a Velocity vs Time graph for a bullet

[Anmol Dubey]

Homework Statement

A rifle bullet of mass 9 g starts from rest and moves 0.6 m in the rifle barrel. The speed of the bullet as it leaves the barrel is 1200 m/s. Assume that the force on the bullet is constant while it is in the barrel.

(a) Sketch a velocity-time graph for the motion of the bullet from rest until the instant it leaves the barrel.

Relevant Equations

I have already got some values
F = 10800 N
a = 1200000 m/s/s
t = 0.0005 s

Here is my working in case it helps :)

Ignore the v = 0.6/0.0001 = 6000m/s

 

[olivermsun]

To clarify, which part do you need help with?
If it's just with the graphing part, do you have a definition of acceleration that relates velocity, acceleration and time?

 

[Anmol Dubey]

To clarify, which part do you need help with?
If it's just with the graphing part, do you have a definition of acceleration that relates velocity, acceleration and time?

Yeah I just need help graphing it. That was the only information I was given.

 

[olivermsun]

One way to think about this is to look again at your solution. The bullet started at 0 m/s and came out of the barrel at 1200 m/s. You computed the time it took for this under constant force (and hence acceleration). So what was the velocity over this period of time? (Again what is the relationship between velocity, acceleration and time? Don't overthink this!) Then just plot it!

 

[Anmol Dubey]

One way to think about this is to look again at your solution. The bullet started at 0 m/s and came out of the barrel at 1200 m/s. You computed the time it took for this under constant force (and hence acceleration). So what was the velocity over this period of time? (Again what is the relationship between velocity, acceleration and time? Don't overthink this!) Then just plot it!

Ahh ok ok thank you so much :)