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

question 38

Multiple Choice

A car travels in a flat circle of radius R.At a certain instant the velocity of the car is 24 m/s west,and the total acceleration of the car is 2.5 m/s² 53 $\degree$ north of west.Which of the following is correct?

• A)R = 0.29 km,and the car's speed is increasing.
• B)R = 0.23 km,and the car's speed is decreasing.
• C)R = 0.23 km,and the car's speed is increasing.
• D)R = 0.29 km,and the car's speed is decreasing.
• E)R = 0.29 km,and the car's speed is constant.

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Definitions:

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