Mary and Debra Stand on a Snow-Covered Roof

question 19

Multiple Choice

Mary and Debra stand on a snow-covered roof.They both throw snowballs with the same initial speed,but in different directions.Mary throws her snowball downward,at 30° below the horizontal;Debra throws her snowball upward,at 30° above the horizontal.Which of the following statements are true about just before the snowballs reach the ground below? (There could be more than one correct choice. )

• A)Debra's snowball will stay in the air longer than Mary's snowball.
• B)Mary's snowball will stay in the air longer than Debra's snowball.
• C)Both snowballs will take the same amount of time to hit the ground.
• D)Debra's snowball has exactly the same acceleration as Mary's snowball.
• E)Mary's snowball has a greater downward acceleration than Debra's snowball.

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Definitions:

Labor Force

The total number of people eligible to work, including both the employed and the unemployed who are seeking work.

Leisure

Free time when one is not working or occupied, allowing for relaxation, hobbies, and personal activities.

Nonpaid Labor

Work that does not receive financial compensation, often seen in domestic tasks, volunteer work, or internship experiences.

Marginal Utility

The supplementary value or utility derived from the consumption of one more unit of a good or service.