A block slides at on a horizontal

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

A 4.0 kg4.0\,\text{kg} block slides at 5.0 m s−15.0\,\text{m}\,\text{s}^{-1} on a horizontal, frictionless surface and collides with a 6.0 kg6.0\,\text{kg} block at rest. The blocks stick together and immediately encounter a rough patch where the coefficient of kinetic friction between the blocks and the surface is 0.200.20. How far do the combined blocks travel across the rough patch before coming to rest? (a) 2.0 m2.0\,\text{m} (b) 1.0 m1.0\,\text{m} (c) 0.51 m0.51\,\text{m} (d) 2.6 m2.6\,\text{m}

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