# physics

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A cart has a momentum of 10. kilogram meters per second east before a collision and a momentum of 5.0 kilogram meters per second west after the collision. The net charge in momentum of this cart is ?
I am not sure how to solve.

• physics -

change momentum=final momentum-initial momentum
= m(Vf-Vi)=5W-10E=5W+10W=15kg m/s W

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