i need to find the initial and final kinetic energy of the system before AND after collision. for this collision the smaller object is colliding with the larger object (which is originally at rest) mass A is .3 kg and mass B is .5 kg  (its an elastic collision)  for object one my initial velocity is .5 m/s and final velocity is -.2 m/s  for object 2 my initial velocity is 0 m/s and final velocity is .3 m/s  please explain/show how you got the answer

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter11: Collisions
Section: Chapter Questions
Problem 80PQ
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i need to find the initial and final kinetic energy of the system before AND after collision. for this collision the smaller object is colliding with the larger object (which is originally at rest) mass A is .3 kg and mass B is .5 kg  (its an elastic collision) 

for object one my initial velocity is .5 m/s and final velocity is -.2 m/s 

for object 2 my initial velocity is 0 m/s and final velocity is .3 m/s 

please explain/show how you got the answer 

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