The Graph Below Shows Position as a Function of Time

question 64

Multiple Choice

The graph below shows position as a function of time for a swimmer competing in a 100-m race swimming twice the length of a 50.0 m pool) . Which of the following statements regarding the motion is incorrect?

• A) The average speed of the swimmer is 1.90 m/s.
• B) The average velocity of the swimmer is 1.90 m/s,
• C) The average velocity of the swimmer is 0.0 m/s
• D) When swimming the second part of the 100-m race, the swimmer is moving with negative velocity.
• E) Swimmer's average acceleration during the second part of the 100-m race is negative.

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Definitions:

Discount Rate

The interest rate used to discount future cash flows to their present value, often reflecting the cost of capital or the risk of the investment.

Present Value

The present evaluation of a future cash sum or series of cash receipts, factoring in a certain rate of return for discounting.

Interest Rate

The sum a lender charges a borrower to use assets, conveyed as a percentage of the principal's amount.

Present Value

The here and now valuation of a prospective future financial amount or series of cash flows, calculated with a certain return rate.