Two carts collide and bounce apart. cart 1 had a momentum of –6 kg • m/s before the collision. cart 2 had a momentum of 10 kg • m/s before the collision. what is the total momentum of the carts after the collision?

Two carts belong to the same system. Since, the there is no external force on the system during the collision, the momentum of the system will conserved as the internal forces which are acting during the collision cannot change the momentum of the system.

Hence, Initial momentum of the system = Final momentum of the system

Initial momentum = - 6 + 10 = 4 kg m/s

Hence, the total momentum of the carts after the collision = 4 kg m/s

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