In the Absence of Air Resistance, the Least Speed with Which

question 44

Multiple Choice

In the absence of air resistance, the least speed with which a body must be projected vertically upward from Earth's surface m_e = 5.99 *10²⁴ kg, r_e = 6.37 * 10⁶ m) if it is to reach an altitude of 800 km is

• A) ~1.39 * 10⁷ m/s.
• B) ~3.73 * 10³ m/s.
• C) ~1.57 * 10⁷ m/s.
• D) ~3.96 * 10³ m/s.
• E) ~3.34 * 10³ m/s.

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Definitions:

Unit Selling Price

The amount of money charged for one unit of a product or service.

Break-even Point

The point at which total costs equal total revenue, meaning no profit or loss is generated.

Manufacturing Margin

The difference between the cost of manufacturing the product and the price it is sold for, indicating the profitability of production.

Variable Cost

Costs that change in proportion to the level of activity or volume of production in a company.