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## Homework Statement

Two heavy frictionless carts are at rest. They are held together by a loop of string. A

light spring is compressed between them. When the string is burned, the spring expands

from 2 cm to 3 cm, and the carts move apart from one another. Both hit the bumpers

fixed to the table at the same instant, but cart A moved 0.45 metre while cart B moved

0.87 metre.

What is the ratio of :

A. The speed of A to the of B after the interaction?

B. Their masses?

C. The impulses applied to the carts?

D. The accelerations of the carts while the spring pushes them apart?

## Homework Equations

This is an Explosion, therefore momentum before is going to be 0.

0 = m1v1 + m2v2.

The impulse will also equal 0

Ft = 0.

## The Attempt at a Solution

Well I wish I knew where to being, right now the only that I can think about is the displacement of the respective carts, and that they hit at an instant. But I cannot figure out much on the ratio and the solution. Any help would be appreciated.

Thank You.