A Car Travels Along a Straight Road, Heading West for Three

question 21

Essay

A car travels along a straight road, heading west for three hours, and then travels northeast on another road for two hours. If the car has maintained a constant speed of $55$ mi/h, how far is it from its starting position?

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Definitions:

Exposure

refers to the contact with a disease-causing factor or the amount of the factor that impinges upon a person or group.

Incidence Rate Ratio

A measure used in epidemiology to compare the rate of occurrence of new cases of a disease or condition between two study populations over a specific time period.

Population Proportion Attributable Risk

The proportion of incidents in the population that are due to the risk factor, helping in understanding the public health impact of the factor.

Cohort Study

A research method that follows a group of people over time to study their exposures and the subsequent outcomes.