A 40-Kg Block Starts from Rest and Slides 5

question 83

Multiple Choice

A 4.0-kg block starts from rest and slides 5.0 m down a plane inclined at 60^o to the horizontal. The coefficient of kinetic friction between the surface and the block is 0.20. The speed of the block after it slides 5.0 m is:

• A) 2.2 m/s
• B) 3.1 m/s
• C) 0 m/s
• D) 7.7 m/s
• E) 6.3 m/s

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