uos

A 2.0-kg object starts from rest from the top of an inclined plane that makes an angle of 30° with the horizontal and has a rise of 0.40 m. It slides down the inclined plane and at the bottom has a kinetic energy of 60 J. Ignore friction and use g = 10 m/ .

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asked by lamees
  1. Our tutors scan the Jiskha board looking for subjects in which they have some knowledge.

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    posted by Ms. Sue
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    posted by DrBob222
  3. You problem does not make sense to me.
    If it slides down a vertical distance of .4 meters then we can calculate the kinetic energy
    (1/2) m v^2 = m g h
    (1/2)(2)v^2 = 20 (.4) = 8 Joules, not 60 joules.
    Moreover you asked for nothing, just stated impossible facts.

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    posted by Damon

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