The Coefficient of the Restitution of an Object Is Defined

question 40

Multiple Choice

The coefficient of the restitution of an object is defined as the ratio of its outgoing to incoming speed when the object collides with a rigid surface.For an object with a coefficient of 0.78,what fraction of the object's kinetic energy is lost during a single collision?

• A) 39%
• B) 16%
• C) 47%
• D) 61%

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Techniques used by companies to evaluate the desirability of investments or expenditures. Major methods include net present value (NPV), internal rate of return (IRR), and payback period.

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Accounting Rate of Return

A financial metric used to assess the profitability of an investment, calculated as the average annual return over the investment's life divided by the initial investment cost.