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

question 1243

Multiple Choice

In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force P = 5600 N is applied horizontally to the crate.As the force pushes the crate a distance of 3.00 m 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:

Inferring with Certainty

Inferring with certainty means drawing a conclusion that is considered to be absolutely true based on the available evidence and logical reasoning.

Implications

The possible effects or consequences that may result from a particular action, statement, or decision.

Grammatically Equivalent

Refers to phrases or sentences that have the same grammatical structure.

Denying the Antecedent

A logical fallacy that occurs when one incorrectly assumes that if the antecedent is not true, then the consequent cannot be true, in a conditional statement.