Find the speed of a particle with the given position function. 
Definitions:
Financial Leverage
Utilizing debt to finance additional assets, aiming to increase returns to shareholders but also increasing risk.
ROE
A metric indicating how effectively a company uses shareholders' funds to generate profits.
Financial Leverage
The use of borrowing to increase the potential return of an investment.
Beta Coefficient
This is a measurement of the volatility of a stock or portfolio in comparison to the market as a whole.
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