A Child Is Sitting on the Seat of a Swing

question 54

Multiple Choice

A child is sitting on the seat of a swing with ropes 10 m long.Her father pulls the swing back until the ropes make a 37º angle with the vertical and then releases the swing.If air resistance is neglected,what is the speed of the child at the bottom of the arc of the swing when the ropes are vertical?

• A)11 m/s
• B)8.8 m/s
• C)14 m/s
• D)6.3 m/s
• E)12 m/s

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Definitions:

Break-even Level

The point at which total revenue equals total costs, resulting in no profit or loss, and is crucial for assessing financial viability.

Break-even Point

The point at which total costs and total revenues are equal, resulting in no net gain or loss.

Contribution Margin Ratio

A financial metric indicating how much of each sales dollar contributes to fixed costs and profit after variable costs are covered.

Target Pre-tax Income

The income goal set by a company before any taxes are applied.