December 1, 2015

Homework Help: Physics(Please help, thank you)

Posted by Hannah on Sunday, June 3, 2012 at 1:20pm.

1) 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 71 kg, and the height of the water slide is 12.0 m. If the kinetic frictional force does -7.4 10^3 J of work, how fast is the student going at the bottom of the slide? Use g = 9.81 m/s2

Would I do sqrt (2)(-7.4e^3)+1/2(12)(71) - (71)(9.8)?

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