A block of mass m1 = 11.5 kg slides along a horizontal surface (with friction, μk = 0.21) a distance d = 2.15 m before striking a second block of mass m2 = 8.25 kg. The first block has an initial velocity of v = 8.25 m/s. 1. Assuming that block one stops after it collides with block two, what is block two's velocity after impact in m/s?

Physics for Scientists and Engineers, Technology Update (No access codes included)
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Author:Raymond A. Serway, John W. Jewett
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Chapter8: Conservation Of Energy
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A block of mass m1 = 11.5 kg slides along a horizontal surface (with friction, μk = 0.21) a distance d = 2.15 m before striking a second block of mass m2 = 8.25 kg. The first block has an initial velocity of v = 8.25 m/s.

1. Assuming that block one stops after it collides with block two, what is block two's velocity after impact in m/s?

 

** answer is NOT 12.3 m/s. 

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