A student, starting from rest, slides down a water slide. On the way down, a kinetic...
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 81.0 kg, and the height of the water slide is 10.9 m. If the kinetic frictional force does -7.70 × 103 J of work, how fast is the student going at the bottom of the slide?
Homework Answers
Potential energy, U = mgh = 81 x 9.8 x 10.9 = 8652.42 J
Change in energy, dE = 8652.42 - 7700 = 952.42 J
0.5 x 81 x v^2 = 952.42
Velocity, v = 4.85 m/s
Comment in case any doubt please rate my answer...
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A student, starting from rest, slides down a water slide. On the
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A student, starting from rest,slides down a water slide. On the way
down, a kinetic frictionalforce (a nonconservative force) acts on
her. Thestudent has a mass of 69.0 kg, and the height of the water
slide is11.3 m. If the kinetic frictional force does -5.60
103 J of work, how fast is the student going atthe
bottom of the slide?
4. A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force "A non-conservative force" acts on her. The student has a mass of 76 kg, and the height of the water slide is 15.0 m. If the kinetic frictional force does - 6.2 x 10 J of work, How fast is the student going at the bottom of the slide?
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