Asked by Seth

A 0.30 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20 kg puck that is initially moving along the x axis with a velocity of 2.8 m/s. After the collision, the 0.20 kg puck has a speed of 0.5 m/s at an angle of θ = 53° to the positive x axis.

(a) Determine the velocity of the 0.30 kg puck after the collision.
(b) Find the fraction of kinetic energy lost in the collision.

Answers

Answered by drwls
(a) Use the same method i suggested here:
http://www.jiskha.com/display.cgi?id=1319256261

Part (b) will be easy once you do part (a).
Just compare initial kinetic energy with final total kinetic energy of both pucks.

Related Questions