A 16-Kg Block Slides Down a Plane (Inclined at 25 $\degree$

question 64

Multiple Choice

A 1.6-kg block slides down a plane (inclined at 25 $\degree$ with the horizontal) at a constant speed of 2.0 m/s.At what rate is the frictional force changing the mechanical energy of the block?

• A)+28 W
• B)+13 W
• C)-13 W
• D)-28 W
• E)+6.5 W

---

Definitions:

Health Care

Services provided to individuals or communities to maintain or improve their health, including prevention, diagnosis, and treatment of diseases.

the United States

A country in North America consisting of 50 states and a federal district, known for its economic and military influence globally.

SAT Scores

Standardized test scores used in the United States for college admissions, measuring students' readiness for college academics in areas like math, evidence-based reading, and writing.

College Grades

College grades are a system of evaluation used to measure students' academic performance and understanding of course material in higher education.