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Q. A 49.0 marble moving at 2.30 strikes a 20.0 marble at rest. What is the speed of each marble immediately after the collision?

Q. A bullet of mass .004 kg is fired horizontally into a wooden block of mass 1.30 kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.200. The bullet remains embedded in the block, which is observed to slide a distance 0.240 m along the surface before stopping.

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