A 20-Kg Object Is Moving Without Friction Along the X-Axis

question 38

Multiple Choice

A 2.0-kg object is moving without friction along the x-axis. The potential energy curve as a function of position is shown in the figure, and the system is conservative. If the speed of the object at the origin is 4.0 m/s, what will be its speed at 7.0 m along the +x-axis?

• A) 4.0 m/s
• B) 4.2 m/s
• C) 4.4 m/s
• D) 4.6 m/s
• E) 9.8 m/s

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