Dallas Says That Any Change in Velocity Is Directly Proportional $\Delta$

question 51

Multiple Choice

Dallas says that any change in velocity is directly proportional to the time interval over which the change took place.Dana says that is true only when the acceleration is constant.Which one,if either,is correct?

• A)Dana,because it is true only when the acceleration is constant.
• B)Dallas,because we can define a_x,avg so that \(\Delta\)v_x = a_x,avg\(\Delta\)t.
• C)Dallas,because a_x,avg always is equal to \[\frac { a _ { x , i } + a _ { x , f } } { 2 }\] .
• D)All the above are correct.
• E)Only (a)and (b)above are correct.

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Definitions:

Income Taxes

Income taxes are taxes levied by governments on individuals and corporations based on their net income or profit within a financial year.

After-Tax Discount Rate

A rate that adjusts for taxes when evaluating the present value of future cash flows.

Income Tax Rate

The percentage at which an individual or corporation is taxed on their income, varying based on income levels and jurisdictions.

Straight-Line Depreciation

A method of allocating the cost of a tangible asset over its useful life in a linear fashion.