Question: Two carts collide on a low-friction track. Cart 1 has an initial momentum of ((+10 mathrm{~kg} cdot mathrm{m} / mathrm{s}) hat{i}) and a final momentum

Two carts collide on a low-friction track. Cart 1 has an initial momentum of $(+10 \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s}) \hat{i}$ and a final momentum of $(-2.0 \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s}) \hat{i}$. If cart 2 has a final momentum of $(-6.0 \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s}) \hat{i}$, what was its initial momentum?

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