In the Figure, a 900-Kg Crate Is on a Rough

question 48

Multiple Choice

In the figure, a 900-kg crate is on a rough surface inclined at 30°. A constant external force P = 7200 N is applied horizontally to the crate. While this force pushes the crate a distance of 3.0 m up the incline, its velocity changes from 1.2 m/s to 2.3 m/s. How much work does friction do during this process?

• A) -3700 J
• B) -7200 J
• C) +3700 J
• D) +7200 J
• E) zero

---

Definitions:

Gross Profit Method

The Gross Profit Method estimates the cost of goods sold and the ending inventory value by applying the company's average gross profit percentage to its net sales.

Lower Of Cost

An accounting principle that values inventory at the lower of its historical cost or market value.

LIFO Inventory

Last-In, First-Out inventory method, where the most recently produced items are recorded as sold first.

Current Replacement Cost

The cost that would be incurred to replace an asset at the present time, considering the asset's current condition.