The Object in the Figure Has a Mass of 3

question 69

Multiple Choice

The object in the figure has a mass of 3.45 kg and is pulled up a slope AB, which is 36 m long; the height BC is 3.00 m. There is no friction and the acceleration is constant. The speed v₁ at A is 3.5 m/s whereas the speed v₂ at B is 5.5 m/s. The average power developed by the motor pulling the object is

• A) 17 W
• B) 3.9 W
• C) 13 W
• D) 0.13 kW
• E) 43 W

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Definitions:

Two Dimensions

Relates to or involves two aspects, features, or elements, often implying a framework or system for analysis or classification.

Genetically Predetermined

Traits or characteristics that are decided by genes inherited from one's parents.

Independent of Cognition

Describes processes or phenomena that occur without the involvement of conscious thought or knowledge.

Differential Emotions Theory

A psychological theory that suggests emotions are distinct constructs and that specific emotions are linked to specific bodily and facial expressions.