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

A 15g bullet strikes and becomes embedded in a 1.10kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is .25, and the impact drives the block a distance of 9.5m before it comes to rest, what was the muzzle speed of the bullet?

2. Relevant equations

m_{1}v_{1}+m_{2}v_{2}=m_{1}v'_{1}+m_{2}v'_{2}

3. The attempt at a solution

I know I will eventually use the above equation in order to solve for V_{1}but i don't quite understand had to use the other information given such as the friction in order to get to this point in the problem solving process. Any advice please?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Conservation of Momentum Problem- Bullet

**Physics Forums | Science Articles, Homework Help, Discussion**