Solving a Simple Collision Problem: Finding Velocity and Kinetic Energy Loss

[physicsisphun]

Heres the problem:

An 8.00 kg mass moving east at 14.8 m/s on a frictionless horizontal surface collides with a 10.0 kg object that is initially at rest. After the collision, the 8.00 kg object moves south at 3.70 m/s.

a. what is the velocity of the 10.0 kb object after the collision?
magnitude:____ m/s
direction: ____ (degrees)

b. what percentage of the initial kinetic energy is lost in the collision?

thanks guys!

 

[quantumdude]

You have to show that you've made an attempt at the problem before you receive help.