A Car Accelerates Uniformly from Rest to a Speed of 20

question 37

Multiple Choice

A car accelerates uniformly from rest to a speed of 20 m/s at the end of 1 min; it then accelerates uniformly to a speed of 40 m/s at the end of the next minute.During this 2-min period,the average speed of the car is

• A)7.5 m/s
• B)30 m/s
• C)15 m/s
• D)20 m/s
• E)40 m/s

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Definitions:

Happiness Increases

Refers to the rise in a person's subjective well-being or satisfaction levels, often resulting from favorable life circumstances or experiences.

Income Level

The amount of monetary or non-monetary earnings produced by an individual or entity within a specified period.

Marginal Utility

The extra pleasure or benefit a person receives from using an additional unit of a product or service.

Unlimited Income

A theoretical concept implying an income level with no upper limit, allowing for an unrestricted ability to purchase goods and services.