What Is the Circular Velocity of an Object Orbiting Earth $v _ { c } = \sqrt { \frac { G M } { r } }$

question 15

Multiple Choice

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? Hint: $v _ { c } = \sqrt { \frac { G M } { r } }$ ; G = 6.67 × 10 ^-11 m ³/s² /kg;  M _E = 5.97 × 10²⁴ kg.

• A) 0.2 m/s
• B) 2 m/s
• C) 20 m/s
• D) 200 m/s
• E) 2,000 m/s

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Definitions:

Marginal Propensity

The proportion of an additional unit of income that is used for consumption; more specifically referred to as the marginal propensity to consume.

Net Wealth

The value of assets minus liabilities.

Consumption Spending

The total value of all goods and services consumed by households within a certain period.

Inflation Rate

The percentage change in the price level of goods and services in an economy over a period of time, often indicating the decrease in purchasing power of a currency.