You Push Your Physics Book Across a Table

question 20

Multiple Choice

You push your physics book across a table. The book weighs 8 N, you push with a steady 5 N force, and the force of friction against the book is 3 N. You push the book a distance of 2 m. The amount of work you do on the book is

• A) 6 J.
• B) 10 J.
• C) zero.
• D) 16 J.
• E) impossible to tell without more information.

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Definitions:

Testosterone Levels

The quantity or concentration of the hormone testosterone present in an individual's body.

Female Sex Hormone

Estrogens, which play vital roles in the regulation of the menstrual cycle and reproductive system, as well as the development of female secondary sexual characteristics.

Estrogen

A female sex hormone that dominates the first half of the female cycle through ovulation.

Impulsivity

A tendency to act on a whim, displaying behavior characterized by little or no forethought, reflection, or consideration of the consequences.