April 21st, 2017, 06:18 AM  #1 
Member Joined: May 2016 From: Ireland Posts: 94 Thanks: 1  collision
Two smooth spheres of masses km and m collide obliquely. the sphere of mass m is brought to rest by the impact. the coefficient of restitution for the collision is 1/k (k greater or equal to 1) Prove before the impact the spheres were moving perpendicular to each other. i have worked out k=1. I know the sphere of mass m was xi+0j before and 0i+0j after. 
April 24th, 2017, 12:34 PM  #2 
Member Joined: May 2016 From: Ireland Posts: 94 Thanks: 1 
i have worked out the first part the second part of the question is show that as a result of the collision the kinetic energy lost by the sphere of mass m is k times the kinetic energy gained by the sphere of mass km. the kinetic energy lost by mass m sphere is .5mx^2 kinetic energy gained by mass km sphere is .5(km)(y)^2.5(km)(a)^2 Any help? 

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