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:

Independent Variable

The factor in a study that the investigator alters to examine its impact on the dependent variable.

Inferential Statistics

A branch of statistics that deals with drawing conclusions about a population based on a sample.

Hypothesis

A proposed explanation for a phenomenon, which can be tested through experimentation or observation.

Forensic Profilers

Experts who analyze evidence from crime scenes and criminal behaviors to create profiles of suspects or understand patterns of criminal activity.