A 50-Kg Block Slides a Distance of 4 $\theta$ = 30 ^$\circ$

question 63

Multiple Choice

A 5.0-kg block slides a distance of 4.0 m down a rough inclined plane.The inclined plane makes an angle $\theta$ = 30 ^$\circ$ with respect to the horizontal.If the block had an initial velocity of 2.0 m/s down the inclined plane and a final velocity of 6.0 m/s down the inclined plane,how much energy was lost by the block due to the work done by friction?

• A)88 J
• B)28 J
• C)80 J
• D)8.0 J
• E)18 J

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