A small ball with a mass of 3.9 kg moves along with the energy curve shown to th

Question

A small ball with a mass of 3.9 kg moves along with the energy curve shown to the left, while not being subjected to any non-conservative forces. At point B it has a velocity of 2.6 m/sec.
Given that ME = 15.182 J at all points on the graph
link to picture of graph...
https://online-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?cc/DuPage/Phys1201/spring/homework/Ch-08-Energy-Conservation/energy_curve_c/energy_curve.jpg

4) What is the net work done by conservative forces on the object between points B and C?
WconB-C=

5) What is the velocity of the object at point C?
vC=

Explanation / Answer

a)no non-conservative forces. means zero net work done b)15.182-6-mgh=.5mv^2==== v=2.16

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