A bullet is fired out of a gun at 400 m/s. If the barrel of the gun is 0.800 m long, what is the acceleration of the bullet as it moves from rest to the end of the barrel.
Is there a way to solve this using calculus?

Question

A bullet is fired out of a gun at 400 m/s. If the barrel of the gun is 0.800 m long, what is the acceleration of the bullet as it moves from rest to the end of the barrel. 
Is there a way to solve this using calculus?

badhi · Answer

the question is similar to an object starting move from rest to 400m/s for a distance of 0.8m. Use $v^2 = u^2 + 2as$

dessyj1 · Answer

are you telling me that the final velocity will be 400 m/s?

dessyj1 · Answer

And the initial velocity, 0?

badhi · Answer

yes assuming that the acceleration happen only inside the barrel

dessyj1 · Answer

I see.

dessyj1 · Answer

Alright, I get it now. Thank you so much!!