On a Smooth Horizontal Floor,an Object Slides into a Spring

question 5

Multiple Choice

On a smooth horizontal floor,an object slides into a spring which is attached to another mass that is initially stationary.When the spring is most compressed,both objects are moving at the same speed.Ignoring friction,what is conserved during this interaction?

• A) momentum and mechanical energy
• B) momentum only
• C) kinetic energy only
• D) momentum and kinetic energy
• E) momentum and potential energy

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