An Object of Mass M₁ Is Moving with a Speed

question 80

Multiple Choice

An object of mass M₁ is moving with a speed v on a straight,level,frictionless track when it collides with another mass M₂ that is at rest on the track.After the collision,M₁ and M₂ stick together and move with a speed of

• A)v
• B)M₁v
• C)(M₁ + M₂)v/M₁
• D)M₁v/(M₁ + M₂)
• E)M₁v/M₂

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Definitions:

Contribution Margin Ratio

A measure that shows the percentage of sales revenue that exceeds the variable costs of production.

Variable Costs

Variable costs are expenses that change in proportion to the activity of a business, such as raw material costs, which vary with production volume.

Fixed Costs

Expenses that do not vary with the level of production or sales, such as rent, salaries, and insurance premiums.

Break-Even Point

The level of production or sales at which total revenues equal total expenses, resulting in no net profit or loss.