(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A bullet leaves the muzzle of a gun at a speed of 400 m/s. The length of the gun barrel is 0.50 m. Assuming the bullet was uniformly accelerated, (a) what was it's average speed inside the barrel? (b) how long was the bullet in the gun after it was fired?

2. Relevant equations

(b) d= 1/2 at^2 or t^2 = 2d/a

3. The attempt at a solution

d= 0.50 m ........ vo=400 m/s ....... v= ????

I don't know how to find the velocity!

I can't figure out how to solve the problem if I don't have the velocity, for (b) and No clue how to find the average speed (distance/time) if I don't havea time variable. Please help me!

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# Homework Help: Average speed, etc.

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