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## Homework Statement

A 1.2 kg glider moving at 3.0 m/s right

undergoes an elastic head-on collision with a glider of equal mass moving at 3.0 m/s left . T

he collision is cushioned by a spring with k=6.0*10^4 N/m. Determine the compression in the spring when the second glider is moving at 1.5m/s. Ans =1.6cm## Homework Equations

same mass therefore..

vf1= Vi2

vf2= Vi1

## The Attempt at a Solution

I think I would be able to do this question if could understand it. Is the initial velocity of the second glider 3m/s or 1.5m/s?. I would really appreciate if someone can explain this question to me because I really don't know where to start.