In the Figure,a 700-Kg Crate Is on a Rough Surface

question 37

Multiple Choice

In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force is applied horizontally to the crate.As the force pushes the crate a distance of up the incline,the speed changes from 1.40 m/s to 2.50 m/s.How much work does gravity do on the crate during this process?

• A) -10,300 J
• B) -3400 J
• C) +10,300 J
• D) +3400 J
• E) zero

---

Definitions:

Brain

The organ in living organisms responsible for processing information, controlling behavior, and enabling thought and memory.

Emotional Intelligence

The skill to recognize, regulate, and articulate personal emotions while managing social relationships with care and understanding.

Self-Awareness

Being aware of one's own identity, feelings, reasons, and aspirations.

Self-Analysis

The process of examining one's own thoughts, feelings, and behaviors to gain self-awareness and understanding.