The Height of an Object T Seconds After It Is $s ( t ) = - 4.9 t ^ { 2 } + 550$

question 59

Multiple Choice

The height of an object t seconds after it is dropped from a height of 550 meters is $s ( t ) = - 4.9 t ^ { 2 } + 550$ . Find the average velocity of the object during the first 7 seconds.

• A) \(\quad 34.30 \mathrm {~m} / \mathrm { sec }\)
• B) \(- 34.30 \mathrm {~m} / \mathrm { sec }\)
• C) \(- 49.00 \mathrm {~m} / \mathrm { sec }\)
• D) \(49 \mathrm {~m} / \mathrm { sec }\)
• E) \(- 16.00 \mathrm {~m} / \mathrm { sec }\)

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Definitions:

Value of Money

The purchasing power of currency, indicating the amount of goods or services that one unit of money can buy, which fluctuates over time due to inflation or deflation.

Quantity Theory

A theory in economics that addresses the relationship between the amount of money in an economy and the level of economic activity, asserting that the general price level of goods and services is directly proportional to the amount of money in circulation.

Real Interest Rates

An interest rate that's corrected for inflation to show the genuine cost of borrowing or the authentic return on savings.

Money Supply

The total capital available in an economy at a given moment, which includes cash, coins, and the money held in checking and savings accounts.