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## Homework Statement

Two carts have a spring of negligible mass compressed between them. The spring has a force constant of 8000 N/m and is compressed 0.05 m from equilibrium. Cart 1 has a mass of 1.3 kg and cart 2 has a mass of 0.5 kg.

What is the speed of cart 1?

What is the speed of cart 2?

## Homework Equations

p=mv

F=ma

U=(.5)kx^2

K=(.5)mv^2

F=kx

## The Attempt at a Solution

F=kx

F=400

400 = (.5)m1v1^2 + (.5)kx^2

800 = m1v1^2 + kx^2

780 = m1v1^2

v1 = 24.494 m/s

but it's wrong.. anyone can help me?

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