- #1

texan14

- 7

- 0

## Homework Statement

A mass "m

_{1}" moves along the x-axis with velocity of magnitude v

_{0}on a frictionless table. It strikes another mass m

_{2}which is initially at rest. The mass m

_{1}goes off along the y-axis. If half the original kinetic energy is lost in the collision, with what speed and at what angle does m

_{2}leave the point of collision?

## Homework Equations

1/2KE(initial) = KE(final)

(1/2)P

_{ix}=P

_{fx}

(1/2)P

_{iy}=P

_{fy}

## The Attempt at a Solution

P

_{ix}=v

_{o}m

_{1}

P

_{fx}=u

_{2}m

_{2}cosθ

P

_{iy}=0

P

_{fy}=u

_{1}m

_{1}- u

_{2}m

_{2}sinθ

I think these are the initial and final components of momentum, but I don't know how to find θ and u

_{2}in terms of known variables.