- #1

toboldlygo

- 32

- 2

## Homework Statement

[/B]

A shell of mass

*m*and speed

*v*explodes into two identical fragments. If the shell was moving horizontally (the positive

*x*direction) with respect to Earth, and one of the fragments is subsequently moving vertically with speed

*v*, find the velocity

**v**of the other fragment immediately following the explosion. (Use the following as necessary:

*v*.)

## Homework Equations

conservation of momentum: m

_{1i}v

_{1i}= 0.5m

_{1f}v

_{1f}+0.5m

_{2f}v

_{2f}

## The Attempt at a Solution

So, what I did was set mv=.5mv+.5m

**v**. Solving for

**v**, I get

**v**=v. I don't know what I'm doing wrong here. I'm pretty sure I'm supposed to be using the conservation of momentum equation, but I don't know where I'm going wrong. Thanks in advance for any help!