A Car Travels in a Flat Circle of Radius R $\degree$

question 64

Multiple Choice

A car travels in a flat circle of radius R.At a certain instant the velocity of the car is 20 m/s north,and the total acceleration of the car is 2.5 m/s² 37 $\degree$ south of west.Which of the following is correct?

• A)R = 0.40 km,and the car's speed is decreasing.
• B)R = 0.20 km,and the car's speed is decreasing.
• C)R = 0.20 km,and the car's speed is increasing.
• D)R = 0.16 km,and the car's speed is increasing.
• E)R = 0.16 km,and the car's speed is decreasing.

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Definitions:

Credit Cards

Financial instruments issued by banks and financial institutions that allow cardholders to borrow funds up to a specified limit to purchase goods and services.

Debit Card

Cards that tap directly into the depositor’s bank account to fund purchases; also called a check card.

Checking Account

A bank account that allows the account holder to access funds, make payments, and manage transactions with ease.

Excess Reserves

Bank reserves in excess of the required minimum, which can be lent out or invested.