Two Objects, X and Y, Are Held at Rest on a Horizontal

question 77

Multiple Choice

Two objects, X and Y, are held at rest on a horizontal frictionless surface and a spring is compressed between them.The mass of X is 2/5 times the mass of Y.Immediately after the spring is released, X has a kinetic energy of 50 J and Y has a kinetic energy of:

• A)20 J
• B)8 J
• C)310 J
• D)125 J
• E)50 J

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Definitions:

Equivalent Unit

A concept in cost accounting used to allocate costs to partially completed units of product, treating them as an equivalent of a proportionate number of fully completed units.

Direct Materials

Raw materials directly used in the production of a product, easily traceable to the finished product.

Weighted Average Method

An inventory valuation method that calculates the cost of goods sold and ending inventory based on the average cost of all similar items in inventory.

Equivalent Units

A concept in process costing that converts partially completed units into a number of fully completed units for the purposes of accounting.