A 30-Kg Block Is on a Frictionless Horizontal Surface

question 37

Multiple Choice

A 3.0-kg block is on a frictionless horizontal surface. The block is at rest when, at t = 0, a force (magnitude P = 2.0 N) acting at an angle of 22° above the horizontal is applied to the block. At what rate is the force P doing work at t = 2.0 s?

• A) 2.3 W
• B) 2.0 W
• C) 1.4 W
• D) 1.7 W
• E) 1.2 W

---

Definitions:

Nature and Nurture

The debate concerning the relative importance of an individual's innate qualities ("nature") versus personal experiences ("nurture") in determining or causing differences in physical and behavioral traits.

Sexual Activity

Behaviors involving the expression of sexuality between individuals, ranging from intimacy and sexual intercourse to other forms of sexual expression.

Marriage Satisfaction

The degree to which partners in a marital relationship find their relationship to be fulfilling, happy, and meeting their expectations.

Developmental Psychology

A branch of psychology that studies physical, cognitive, and social change throughout the life span.